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Mac · Apple · released November 9, 2026

Apple macOS security updates, November 9, 2026: every vulnerability, rated

Apple fixed 8 macOS vulnerabilities on November 9, 2026, in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3. 1 was already being exploited, so it goes to the top of the list. 1 involves running code, kernel or root privileges, a sandbox escape or a remote attacker, so it belongs 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
8
Patch now
1
This week
1
Normal cycle
6
Low
0

Fixed in: macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3, macOS Sequoia 15.8.3Apple security notes Apple security notes Apple security notes

Patch now1 on this page

  • Patch nowMacNovember 9, 2026

    CVE-2026-111497brotli

    EPSS 0.83

    In brotli: Processing maliciously crafted input may lead to memory corruption. Apple's fix: An out-of-bounds write issue was addressed with improved input validation. CISA lists it as a Known Exploited Vulnerability, meaning attacks have been seen (added 2026-10-27; federal agencies must fix it by 2026-11-10). EPSS score 0.83, the modelled probability of exploitation activity in the next 30 days. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

This week1 on this page

  • This weekMacNovember 9, 2026

    CVE-2026-113961Messages

    In Messages: A remote attacker may be able to join an iMessage group chat and receive its messages. Apple's fix: An authorization issue was addressed with improved validation. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

Normal cycle6 on this page · tap one for its risk review

  • Normal cycleMacNovember 9, 2026

    CVE-2026-113960Messages

    In Messages: A user added to an iMessage group may be able to access messages sent before they joined. Apple's fix: This issue was addressed by removing the vulnerable code. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

  • Normal cycleMacNovember 9, 2026

    CVE-2026-113964CoreUtils

    In CoreUtils: An attacker in Bluetooth range may be able to bypass the rate limit on pairing code attempts and pair with a device without user interaction. Apple's fix: A logic issue was addressed with improved state management. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

  • Normal cycleMacNovember 9, 2026

    CVE-2026-113965CoreUtils

    In CoreUtils: A malicious Bluetooth device may be able to establish a pairing without user interaction. Apple's fix: This issue was addressed with improved checks. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

  • Normal cycleMacNovember 9, 2026

    CVE-2026-113968AirPlay

    In AirPlay: An attacker in Bluetooth range may be able to bypass the rate limit on pairing code attempts. Apple's fix: A logic issue was addressed with improved state management. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

  • Normal cycleMacNovember 9, 2026

    CVE-2026-113969rapportd

    In rapportd: An attacker on the same network may be able to bypass the rate limit on AirPlay pairing code attempts. Apple's fix: A logic issue was addressed with improved state management. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

  • Normal cycleMacNovember 9, 2026

    CVE-2026-113970Bluetooth

    In Bluetooth: An attacker in Bluetooth range may be able to corrupt process memory. Apple's fix: A use-after-free issue was addressed with improved memory management. Fixed in macOS Golden Gate 27.2.1, macOS Tahoe 26.7.3 and macOS Sequoia 15.8.3.

    Apple release notes NVD record

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.

Book a free IT assessment Managed IT servicesIntune for Windows and Mac

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.

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