Windows · Microsoft · released November 10, 2026
Windows security updates, November 2026: every vulnerability, rated
Microsoft published 733 Windows vulnerabilities in November 2026, most of them on Patch Tuesday, November 10, 2026. 36 are rated Critical. None was reported as exploited when it was published. 70 more deserve attention this week; 663 can follow the normal monthly rollout. The updates that carry these fixes need a restart.
- CVEs
- 733
- Patch now
- 0
- This week
- 70
- Normal cycle
- 657
- Low
- 6
Fixed in: November 2026 Windows security update restart requiredMicrosoft release notes
Page 11 of 13 · sorted by risk, then score
Normal cycle60 on this page · tap one for its risk review
- Normal cycleWindowsNovember 10, 2026
CVE-2026-96992Windows PCI Bus Driver
Elevation of Privilege · Severity Important · CVSS 6.4
In Windows PCI Bus Driver, an attacker with no account could take higher privileges with physical access to the device. Microsoft severity Important, CVSS 6.4. Microsoft rates it "exploitation unlikely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131087) for 20 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-113763Windows DPAPI (Data Protection Application Programming Interface)
Elevation of Privilege · Severity Important · CVSS 6.3
In Windows DPAPI (Data Protection Application Programming Interface), an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 6.3. Microsoft rates it "exploitation unlikely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119840Windows Universal Disk Format File System Driver (UDFS)
Elevation of Privilege · Severity Important · CVSS 6.3
In Windows Universal Disk Format File System Driver (UDFS), an attacker with an ordinary user account could take higher privileges with physical access to the device. Microsoft severity Important, CVSS 6.3. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112757Windows Secure Kernel Mode
Information Disclosure · Severity Important · CVSS 6
In Windows Secure Kernel Mode, an attacker who already has admin rights could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 6.0. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119955Windows Hyper-V
Denial of Service · Severity Important · CVSS 6
In Windows Hyper-V, an attacker who already has admin rights could crash or stall the affected service once they can run code on the PC. Microsoft severity Important, CVSS 6.0. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131087) for 14 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105557Windows DHCP Server
Information Disclosure · Severity Important · CVSS 5.9
In Windows DHCP Server, an attacker with no account could read information they shouldn't see over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-108425Windows DNS
Information Disclosure · Severity Important · CVSS 5.9
In Windows DNS, an attacker with no account could read information they shouldn't see over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-116697Reliable Multicast Transport Driver (RMCAST)
Denial of Service · Severity Important · CVSS 5.9
In Reliable Multicast Transport Driver (RMCAST), an attacker with no account could crash or stall the affected service over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118213Windows Deployment Services
Information Disclosure · Severity Important · CVSS 5.9
In Windows Deployment Services, an attacker with no account could read information they shouldn't see over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119404Windows Client for NFS
Security Feature Bypass · Severity Important · CVSS 5.9
In Windows Client for NFS, an attacker with no account could get around a Windows security protection over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119832Windows BitLocker
Security Feature Bypass · Severity Important · CVSS 5.9
In Windows BitLocker, an attacker with an ordinary user account could get around a Windows security protection with physical access to the device. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119909Windows Internet Information Services
Denial of Service · Severity Important · CVSS 5.9
In Windows Internet Information Services, an attacker with no account could crash or stall the affected service over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119936Windows Internet Information Services
Denial of Service · Severity Important · CVSS 5.9
In Windows Internet Information Services, an attacker with no account could crash or stall the affected service over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119946HTTP.sys
Information Disclosure · Severity Important · CVSS 5.9
In HTTP.sys, an attacker with no account could read information they shouldn't see over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119972Remote Procedure Call
Denial of Service · Severity Important · CVSS 5.9
In Remote Procedure Call, an attacker with no account could crash or stall the affected service over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-122474Windows Security Account Manager Remote Protocol
Security Feature Bypass · Severity Important · CVSS 5.9
In Windows Security Account Manager Remote Protocol, an attacker with no account could get around a Windows security protection over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-95913Windows Hyper-V
Denial of Service · Severity Important · CVSS 5.9
In Windows Hyper-V, an attacker with no account could crash or stall the affected service over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-96975Role: DNS Server
Denial of Service · Severity Important · CVSS 5.9
In Role: DNS Server, an attacker with no account could crash or stall the affected service over the network without anyone clicking anything. Microsoft severity Important, CVSS 5.9. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-88211Graphic Fonts
Information Disclosure · Severity Important · CVSS 5.7
In Graphic Fonts, an attacker with an ordinary user account could read information they shouldn't see over the network, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 5.7. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-88231Windows iSCSI
Information Disclosure · Severity Important · CVSS 5.7
In Windows iSCSI, an attacker with an ordinary user account could read information they shouldn't see over the network, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 5.7. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-96022Windows Text Services Framework
Information Disclosure · Severity Important · CVSS 5.6
In Windows Text Services Framework, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.6. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-96150Microsoft Windows Codecs Library
Information Disclosure · Severity Important · CVSS 5.6
In Microsoft Windows Codecs Library, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.6. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-102868Windows Shell
Information Disclosure · Severity Important · CVSS 5.5
In Windows Shell, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5124008, KB5131087, KB5132059) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105527Windows Encrypting File System (EFS)
Denial of Service · Severity Important · CVSS 5.5
In Windows Encrypting File System (EFS), an attacker with an ordinary user account could crash or stall the affected service once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105530Windows System Events Broker
Information Disclosure · Severity Important · CVSS 5.5
In Windows System Events Broker, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105531Windows Print Spooler Components
Information Disclosure · Severity Important · CVSS 5.5
In Windows Print Spooler Components, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105537Mailslot File System
Information Disclosure · Severity Important · CVSS 5.5
In Mailslot File System, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105552Windows Kernel
Information Disclosure · Severity Important · CVSS 5.5
In Windows Kernel, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-105584Windows Inventory Backup
Information Disclosure · Severity Important · CVSS 5.5
In Windows Inventory Backup, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131087) for 18 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-108408Windows Telephony Service
Information Disclosure · Severity Important · CVSS 5.5
In Windows Telephony Service, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-108409Windows Overlay Filter
Information Disclosure · Severity Important · CVSS 5.5
In Windows Overlay Filter, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-108410Windows Management Instrumentation
Information Disclosure · Severity Important · CVSS 5.5
In Windows Management Instrumentation, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112750Windows Overlay Filter
Information Disclosure · Severity Important · CVSS 5.5
In Windows Overlay Filter, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112754Microsoft Graphics Component
Information Disclosure · Severity Important · CVSS 5.5
In Microsoft Graphics Component, an attacker with no account could read information they shouldn't see once they can run code on the PC, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112803Windows Cloud Files Mini Filter Driver
Information Disclosure · Severity Important · CVSS 5.5
In Windows Cloud Files Mini Filter Driver, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112809Windows Composite Image File System
Information Disclosure · Severity Important · CVSS 5.5
In Windows Composite Image File System, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5132059) for 2 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112814Windows Management Instrumentation
Elevation of Privilege · Severity Important · CVSS 5.5
In Windows Management Instrumentation, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112965Windows Management Instrumentation
Information Disclosure · Severity Important · CVSS 5.5
In Windows Management Instrumentation, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112974Microsoft Account
Tampering · Severity Important · CVSS 5.5
In Microsoft Account, an attacker with an ordinary user account could change data or settings they shouldn't control once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112977Windows Deployment Services
Information Disclosure · Severity Important · CVSS 5.5
In Windows Deployment Services, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112979Windows State Repository Service
Tampering · Severity Important · CVSS 5.5
In Windows State Repository Service, an attacker with an ordinary user account could change data or settings they shouldn't control once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112982Microsoft Account
Tampering · Severity Important · CVSS 5.5
In Microsoft Account, an attacker with an ordinary user account could change data or settings they shouldn't control once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112988Windows Desktop Window Manager
Elevation of Privilege · Severity Important · CVSS 5.5
In Windows Desktop Window Manager, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-113757Windows FileCrypt Driver
Information Disclosure · Severity Important · CVSS 5.5
In Windows FileCrypt Driver, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-113771Windows Container Isolation FS Filter Driver (unionfs.sys)
Elevation of Privilege · Severity Important · CVSS 5.5
In Windows Container Isolation FS Filter Driver (unionfs.sys), an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5132059) for 2 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-113844Windows NTFS
Tampering · Severity Important · CVSS 5.5
In Windows NTFS, an attacker with an ordinary user account could change data or settings they shouldn't control once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118140Server for NFS
Information Disclosure · Severity Important · CVSS 5.5
In Server for NFS, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 8 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118736Windows Network File System
Information Disclosure · Severity Important · CVSS 5.5
In Windows Network File System, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119825Win32k
Information Disclosure · Severity Important · CVSS 5.5
In Win32k, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119855Windows COM+ Event System Service
Information Disclosure · Severity Important · CVSS 5.5
In Windows COM+ Event System Service, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119856Win32k
Information Disclosure · Severity Important · CVSS 5.5
In Win32k, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119857Windows Kernel
Information Disclosure · Severity Important · CVSS 5.5
In Windows Kernel, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131087) for 20 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-122162Windows Update Stack
Information Disclosure · Severity Important · CVSS 5.5
In Windows Update Stack, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5132043) for 10 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-122297Windows Kernel Transaction Manager
Information Disclosure · Severity Important · CVSS 5.5
In Windows Kernel Transaction Manager, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-84004AMD Zen
Information Disclosure · Severity Important · CVSS 5.5
In AMD Zen, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 32 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-84005AMD Zen
Information Disclosure · Severity Important · CVSS 5.5
In AMD Zen, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 18 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-88217Windows Graphics Kernel
Information Disclosure · Severity Important · CVSS 5.5
In Windows Graphics Kernel, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-88220Windows Performance Counters
Information Disclosure · Severity Important · CVSS 5.5
In Windows Performance Counters, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-88247Windows Program Compatibility Assistant Service
Information Disclosure · Severity Important · CVSS 5.5
In Windows Program Compatibility Assistant Service, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-94517Windows Kernel Transaction Manager
Information Disclosure · Severity Important · CVSS 5.5
In Windows Kernel Transaction Manager, an attacker with an ordinary user account could read information they shouldn't see once they can run code on the PC. Microsoft severity Important, CVSS 5.5. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131085) for 28 supported Windows versions; a restart is required.
Why an MSP manages this
Reading the list is the easy part
Nobody running a business reads all of them, and nobody should have to. The work is deciding which ones matter today, testing the fixes, getting them onto every PC and Mac without breaking the workday, and proving it was done.
- 01
Triage that starts with the exploited ones
Most of these fixes can ride the normal monthly rollout. A handful need action the same day. Telling them apart, every month, on every machine, is the core of the work, and it is the part an office manager rarely has time for.
- 02
Testing before everyone gets it
Updates go to a test ring and a pilot group first, so a broken accounting package or design tool shows up on two machines instead of forty, and the rollout pauses until it is sorted.
- 03
Restarts that don't wreck the workday
Windows updates usually need a restart and macOS updates often do. Deadlines, maintenance windows and grace periods get the fix installed without forcing a reboot in the middle of a client call.
- 04
Macs managed as seriously as PCs
Windows patching tools don't patch Macs. macOS updates need their own install-by deadlines through device management, and major upgrades need the same compatibility testing a Windows feature update gets.
- 05
A plan for machines that can't update
Hardware that ages out and versions past end of support stop getting every fix. They need a decision, isolate, upgrade or replace, before they become the easiest way in.
- 06
Proof when someone asks
Cyber insurance applications, customer security questionnaires and frameworks such as the FTC Safeguards Rule all ask how you keep systems patched. A managed service keeps the inventory and the reports that answer them.
The ins and outs
What keeping Windows and Mac patched actually involves
Windows
Patch Tuesday, and the exceptions
Microsoft ships security updates on the second Tuesday of each month, and out of band when something can't wait. This log marks the out-of-band ones.
Cumulative updates
Each month's Windows update carries the earlier months' fixes, so a PC that missed one catches up with the next, as long as it actually installs.
Fixed first, announced later
Some fixes ship before the vulnerability is disclosed. This log flags them, because a PC that is already current is already covered.
Rings, deferrals and deadlines
Windows Update for Business and Intune let you delay updates for a test group, set an install-by deadline and give a grace period before a forced restart.
Known Issue Rollback and safeguard holds
Microsoft can quietly roll back a change that breaks something, and holds back feature updates from PCs it knows will have trouble. Both explain why two PCs on the same network can be on different builds.
Feature updates and end of support
Each Windows version is serviced for a fixed period. Windows 10 PCs past end of support only get security fixes through the paid Extended Security Updates program.
Mac
No fixed release day
Apple publishes security updates when they are ready, often several times a month around a major release, so Mac patching runs on alerts, not a calendar.
Updates versus upgrades
A point update (26.7 to 26.7.1) fixes problems. A major upgrade (Tahoe to Golden Gate) changes the system and needs the same app testing as a Windows feature update.
Older versions get some fixes, not all
Apple's deployment guide says not every security issue is fixed in previous major versions. Staying a version behind is a choice with a cost, not a safe default.
Install-by deadlines through device management
Without enforcement, a macOS update prompt can be put off again and again. Device management can set a deadline so the update installs on schedule.
Macs that age out
When a Mac can no longer run a current macOS version, it stops getting the full set of fixes. Inventory by model and macOS version shows which ones are next.
Apple Business for zero-touch setup
New Macs enrolled through Apple Business arrive already managed, so update policy applies from the first login instead of after someone remembers to enroll them.
Both platforms
Third-party apps aren't on these lists
Browsers, PDF readers, accounting software, VPN clients and plug-ins patch on their own schedules. A machine can be current on Windows or macOS and still exposed through an app.
Firmware and drivers
BIOS and UEFI firmware, docks and network gear get security fixes too, and they rarely update themselves.
Recovery keys before big changes
Before a feature update or a major macOS upgrade, confirm BitLocker and FileVault recovery keys are escrowed somewhere you can reach.
Laptops that are rarely in the office
Remote and travelling staff need updates delivered over the internet with the same deadlines as office machines, or they drift months behind.
You can't patch what you can't see
An up-to-date inventory of every PC and Mac, with its version and last update, is what turns a list like this one into a finished job.