Mac · Apple · released July 27, 2026
Apple macOS security updates, July 27, 2026: every vulnerability, rated
Apple fixed 199 macOS vulnerabilities on July 27, 2026, in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8. None was reported as exploited when it was published. 72 involve running code, kernel or root privileges, a sandbox escape or a remote attacker, so they belong in this week's work. Macs on older macOS versions only get some of these fixes; Apple's own guidance is that not every security issue is fixed in previous major versions.
- CVEs
- 199
- Patch now
- 0
- This week
- 72
- Normal cycle
- 73
- Low
- 54
Fixed in: macOS Tahoe 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8Apple security notes Apple security notes Apple security notes
Page 3 of 4 · sorted by risk, then score
Normal cycle25 on this page · tap one for its risk review
- Normal cycleMacJuly 27, 2026
CVE-2026-4424libarchive
EPSS 0.01
In libarchive: Processing a maliciously crafted file may result in disclosure of process memory. Apple's fix: This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org. EPSS score 0.01, the modelled probability of exploitation activity in the next 30 days. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64707BackgroundAssets
In BackgroundAssets: An app may be able to delete files for which it does not have permission. Apple's fix: A permissions issue was addressed with improved validation. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64710Crash Reporter
In Crash Reporter: An app may be able to leak sensitive user information. Apple's fix: A privacy issue was addressed by removing sensitive data. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64711NSColorPanel
In NSColorPanel: An app may be able to leak sensitive user information. Apple's fix: This issue was addressed with additional entitlement checks. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64713WebKit
In WebKit: Websites may know if the user has visited a given link. Apple's fix: This issue was addressed with improved checks. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64716ImageIO
In ImageIO: Processing a maliciously crafted image may corrupt process memory. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64718WebKit Canvas
In WebKit Canvas: Processing maliciously crafted web content may lead to an unexpected Safari crash. Apple's fix: A use-after-free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6 and macOS Golden Gate 27.
- Normal cycleMacJuly 27, 2026
CVE-2026-64719WebRTC
In WebRTC: Processing maliciously crafted web content may lead to an unexpected Safari crash. Apple's fix: An out-of-bounds access issue was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64721Kernel
In Kernel: An app may be able to access sensitive user data. Apple's fix: This issue was addressed through improved state management. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64722Model I/O
In Model I/O: Processing a 3D model may result in disclosure of process memory. Apple's fix: A buffer overflow issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6 and macOS Sequoia 15.7.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64723Kernel
In Kernel: An app may be able to access sensitive user data. Apple's fix: A logic issue was addressed with improved checks. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64726Wi-Fi
In Wi-Fi: An attacker in physical proximity may be able to corrupt process memory. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64728WebKit
In WebKit: Maliciously crafted web content may violate iframe sandboxing policy. Apple's fix: A permissions issue was addressed with improved validation. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64730WebKit
In WebKit: Visiting a website that frames malicious content may lead to UI spoofing. Apple's fix: The issue was addressed with improved UI. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64733Accounts Framework
In Accounts Framework: An app may be able to fingerprint the user. Apple's fix: This issue was addressed with improved data protection. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64734Contacts
In Contacts: Processing a maliciously crafted contact may leak sensitive data. Apple's fix: The issue was addressed with improved checks. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64743Managed Configuration
In Managed Configuration: An app may be able to access sensitive user data. Apple's fix: An authorization issue was addressed with improved state management. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64745Siri
In Siri: A person with physical access to a locked device may be able to access contacts and photos. Apple's fix: This issue was addressed with additional restrictions on the lock screen. Fixed in macOS Tahoe 26.6 and macOS Sequoia 15.7.8.
- Normal cycleMacJuly 27, 2026
CVE-2026-64746Contacts
In Contacts: An app may be able to add contacts without user authorization. Apple's fix: An authorization issue was addressed with improved validation. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64757WebKit
In WebKit: Processing maliciously crafted web content may lead to an unexpected Safari crash. Apple's fix: A memory corruption issue was addressed with improved state management. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-64783WebKit
In WebKit: Processing maliciously crafted web content may lead to an unexpected Safari crash. Apple's fix: A use-after-free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-65353Apple Account
In Apple Account: An app may be able to access sensitive user data. Apple's fix: An authorization issue was addressed with improved state management. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-65404Accounts
In Accounts: A malicious application may be able to bypass Privacy preferences. Apple's fix: An authorization issue was addressed with improved state management. Fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8 and macOS Golden Gate 27.
- Normal cycleMacJuly 27, 2026
CVE-2026-84562Virtualization
In Virtualization: An app may be able to access protected user data. Apple's fix: A race condition was addressed with additional validation. Fixed in macOS Tahoe 26.6.
- Normal cycleMacJuly 27, 2026
CVE-2026-86902NSDocument
In NSDocument: An app may be able to access sensitive user data. Apple's fix: A parsing issue in the handling of directory paths was addressed with improved path validation. Fixed in macOS Sonoma 14.8.8 and macOS Golden Gate 27.
Low35 on this page · tap one for its risk review
- LowMacJuly 27, 2026
CVE-2026-28928Apple Neural Engine
In Apple Neural Engine: An app may be able to cause unexpected system termination. Apple's fix: A use after free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-28932xar
In xar: An app may be able to cause a denial of service. Apple's fix: A logic issue existed resulting in memory corruption. This was addressed with improved state management. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-28933ppp
In ppp: An app may be able to cause unexpected system termination. Apple's fix: A use-after-free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-28936CoreServices
In CoreServices: Processing a maliciously crafted file may lead to unexpected app termination. Apple's fix: The issue was addressed with improved checks. Fixed in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-39873SMB
In SMB: Connecting to a malicious SMB server may lead to unexpected system termination. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43653mDNSResponder
In mDNSResponder: An attacker on the local network may be able to cause a denial-of-service. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Sequoia 15.7.8.
- LowMacJuly 27, 2026
CVE-2026-43702CoreMedia Video Toolbox
In CoreMedia Video Toolbox: Processing a maliciously crafted video file may lead to unexpected app termination or corrupt process memory. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6, macOS Tahoe 26.7 and macOS Sequoia 15.8.
- LowMacJuly 27, 2026
CVE-2026-43711CoreMedia
In CoreMedia: Processing a maliciously crafted video file may lead to unexpected app termination. Apple's fix: A memory corruption issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43739Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds write issue was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43747Disk Images
In Disk Images: Parsing a maliciously crafted file may lead to an unexpected app termination. Apple's fix: An out-of-bounds read was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43748Apple Neural Engine
In Apple Neural Engine: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds write issue was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6 and macOS Sequoia 15.7.8.
- LowMacJuly 27, 2026
CVE-2026-43757Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds read was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43761AppleRAID
In AppleRAID: Mounting a malicious disk image may cause unexpected system termination. Apple's fix: An out-of-bounds write issue was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43764HFS
In HFS: An app may be able to cause unexpected system termination. Apple's fix: An integer overflow was addressed with improved input validation. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43767HFS
In HFS: An app may be able to cause unexpected system termination. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43768udf
In udf: An app may be able to cause unexpected system termination. Apple's fix: The issue was addressed with improved memory handling. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43769Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: An integer overflow was addressed with improved input validation. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43771Net-SNMP
In Net-SNMP: An app may be able to cause a denial-of-service. Apple's fix: A stack overflow was addressed with improved input validation. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43780ImageIO
In ImageIO: Processing a maliciously crafted texture may lead to unexpected app termination. Apple's fix: An integer overflow was addressed with improved input validation. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43793DriverKit
In DriverKit: An app may be able to cause unexpected system termination. Apple's fix: An issue existed in the handling of environment variables. This issue was addressed with improved validation. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43799Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: A use after free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43802CoreVideo
In CoreVideo: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds write issue was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43804WebKit
In WebKit: Visiting a website may lead to an app denial-of-service. Apple's fix: This issue was addressed through improved state management. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43806mDNSResponder
In mDNSResponder: A local attacker may be able to cause a denial of service. Apple's fix: A denial of service issue was addressed by removing the vulnerable code. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43807MobileAccessoryUpdater
In MobileAccessoryUpdater: A malicious accessory may be able to cause unexpected app termination. Apple's fix: A buffer overflow was addressed with improved bounds checking. Fixed in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43808Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: A use-after-free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43809Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds read was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-43812Pro Res
In Pro Res: An app may be able to cause unexpected system termination. Apple's fix: A use after free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6 and macOS Sequoia 15.7.8.
- LowMacJuly 27, 2026
CVE-2026-43814Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: A use after free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43816Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds write issue was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43817Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: An out-of-bounds read was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-43822Kernel
In Kernel: An app may be able to cause unexpected system termination. Apple's fix: A use after free issue was addressed with improved memory management. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-64691GPU Drivers
In GPU Drivers: An app may be able to cause unexpected system termination. Apple's fix: A buffer overflow was addressed with improved size validation. Fixed in macOS Tahoe 26.6.
- LowMacJuly 27, 2026
CVE-2026-64692Heimdal
In Heimdal: An app may be able to cause a denial-of-service. Apple's fix: An out-of-bounds read was addressed with improved bounds checking. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
- LowMacJuly 27, 2026
CVE-2026-64693ImageIO
In ImageIO: Processing a maliciously crafted image may lead to a denial-of-service. Apple's fix: A type confusion issue was addressed with improved checks. Fixed in macOS Tahoe 26.6, macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8.
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.