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 4 of 13 · sorted by risk, then score
Normal cycle60 on this page · tap one for its risk review
- Normal cycleWindowsNovember 10, 2026
CVE-2026-112751Windows Remote Assistance
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Remote Assistance, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112752Windows Print Spooler Components
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Print Spooler Components, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112758Windows Defender Firewall Service
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Defender Firewall Service, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112760Windows Overlay Filter
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Overlay Filter, an attacker with no account could take higher privileges once they can run code on the PC, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 7.8. 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-2026-112794Windows Smart Card
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Smart Card, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112799Windows Projected File System
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Projected File System, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112801Windows eSCL Scanner
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows eSCL Scanner, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112802Windows Kernel
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Kernel, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112978Windows Print Spooler Components
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Print Spooler Components, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-112981Windows Print Spooler Components
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Print Spooler Components, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-113748Software Protection Platform (SPP)
Elevation of Privilege · Severity Important · CVSS 7.8
In Software Protection Platform (SPP), an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-113758Windows Desktop Window Manager
Elevation of Privilege · Severity Important · CVSS 7.8
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 7.8. 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-2026-113765Windows File Server Resource Management Service
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows File Server Resource Management Service, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-113767Windows COM+ Event System Service
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows COM+ Event System Service, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-113843Windows Remote Access Connection Manager
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Remote Access Connection Manager, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-113847Windows Installer
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Installer, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-113848Windows NTFS
Remote Code Execution · Severity Important · CVSS 7.8
In Windows NTFS, an attacker with no account could run their own code once they can run code on the PC, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 7.8. 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-2026-114170Windows Kernel
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Kernel, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-118126Windows Message Queuing
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Message Queuing, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-118137Windows FTP Service
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows FTP Service, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-118138Windows Client for NFS
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Client for NFS, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-118142Windows Distributed File System (DFS)
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Distributed File System (DFS), an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131080, KB5131087) for 12 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118215Windows Advanced Rasterization Platform
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Advanced Rasterization Platform, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118220Windows Multiple Provider Router
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Multiple Provider Router, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-118222Windows Advanced Rasterization Platform
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Advanced Rasterization Platform, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118223Windows Advanced Rasterization Platform
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Advanced Rasterization Platform, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118224Windows Advanced Rasterization Platform
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Advanced Rasterization Platform, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-118280Windows Advanced Rasterization Platform
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Advanced Rasterization Platform, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126651, KB5126653) for 24 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-119390Remote Desktop Client
Remote Code Execution · Severity Important · CVSS 7.8
In Remote Desktop Client, an attacker with an ordinary user account could run their own code once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119391Windows Hyper-V
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Hyper-V, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119393Windows Credential Manager
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Credential Manager, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119816Windows Microsoft Account Sign-in Assistant
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Microsoft Account Sign-in Assistant, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119817Windows Shell
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Shell, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119821Windows Network Connection Broker
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Network Connection Broker, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119826Windows Hyper-V
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Hyper-V, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119834Windows Subsystem for Linux
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Subsystem for Linux, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119846Windows Subsystem for Linux
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Subsystem for Linux, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation unlikely". 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-2026-119847Windows Kerberos
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Kerberos, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119899Windows Win32k
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Win32k, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119904Microsoft Windows Speech
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Windows Speech, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119907Windows Function Discovery Resource Publication
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Function Discovery Resource Publication, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119917Windows Distributed Transaction Coordinator
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Distributed Transaction Coordinator, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119929Windows Installer
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Installer, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119933Windows NTFS
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows NTFS, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119939Windows Print Spooler Components
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Print Spooler Components, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119941Volume Shadow Copy
Elevation of Privilege · Severity Important · CVSS 7.8
In Volume Shadow Copy, an attacker with no account could take higher privileges once they can run code on the PC, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 7.8. 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-2026-119943Microsoft Windows Search Component
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Windows Search Component, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119953Windows DNS
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows DNS, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119954Microsoft Windows Search Component
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Windows Search Component, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-119987Microsoft Windows App Store
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Windows App Store, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5126646, KB5126653, KB5126655) for 20 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-121673Windows Filter Manager
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Filter Manager, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-121681Microsoft Trace Data Helper
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Trace Data Helper, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5127646, KB5127648, KB5131080) for 10 supported Windows versions; a restart is required.
- Normal cycleWindowsNovember 10, 2026
CVE-2026-122165Windows Client for NFS
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Client for NFS, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-122166Windows Remote Desktop Services
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Remote Desktop Services, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-122168Microsoft Windows Media Foundation
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Windows Media Foundation, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-122172Microsoft Trace Data Helper
Elevation of Privilege · Severity Important · CVSS 7.8
In Microsoft Trace Data Helper, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-122183Windows Kernel
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Kernel, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-122984Windows Universal Disk Format File System Driver (UDFS)
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Universal Disk Format File System Driver (UDFS), an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-123388Windows Program Compatibility Assistant Service
Elevation of Privilege · Severity Important · CVSS 7.8
In Windows Program Compatibility Assistant Service, an attacker with an ordinary user account could take higher privileges once they can run code on the PC. Microsoft severity Important, CVSS 7.8. 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-2026-124225Windows PowerShell
Remote Code Execution · Severity Important · CVSS 7.8
In Windows PowerShell, an attacker with no account could run their own code once they can run code on the PC, but only if someone opens a file, link or message. Microsoft severity Important, CVSS 7.8. Microsoft rates it "exploitation less likely". Fixed in the November 2026 Windows security update (KB5131077, KB5131085, KB5131087) 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.