January 2026 security updates: Microsoft Patch Tuesday, macOS and Linux
Microsoft's Patch Tuesday on January 13, 2026 fixed 116 CVEs (8 critical, 1 exploited at release) in 26 security updates. Debian, Ubuntu, Red Hat and Fedora released 11,857 Linux fixes for 2,552 CVEs. Every January 2026 security update, ranked by whether its vulnerabilities are being exploited.
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Updates by month
What Microsoft, Apple and the Linux distributions released in a calendar month. Each list is in priority order: exploited (KEV or vendor-confirmed) first, then by exploited CVEs closed, then by highest EPSS. Counts include every update released that month, supported products or not. Third-party apps follow below, by recent vulnerability.
Microsoft
All Microsoft fixes for January 2026Patch Tuesday was January 13, 2026: 116 CVEs (8 critical) in 26 security updates, 1 exploited at release. Read the write-up
Show as a table
| Priority | Update | Type | Released | CVEs | Exploited | Max EPSS | Max CVSS |
|---|---|---|---|---|---|---|---|
| Patch now | KB5002713 Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) |
Security | Jan 26, 2026 | 1 | KEV1 | 0.7080 | 7.8 |
| Patch now | KB5073379 Windows Server 2025, Windows Server 2025 (Server Core installation) |
Security | Jan 13, 2026 | 85 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5074109 Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems and 1 more |
Security | Jan 13, 2026 | 85 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073450 Windows Server 2022, 23H2 Edition (Server Core installation) |
ServicingStack | Jan 13, 2026 | 79 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073455 Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems |
ServicingStack | Jan 13, 2026 | 79 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073457 Windows Server 2022, Windows Server 2022 (Server Core installation) |
ServicingStack | Jan 13, 2026 | 77 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073723 Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 1 more |
Security | Jan 13, 2026 | 72 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073724 Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 3 more |
Security | Jan 13, 2026 | 72 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073722 Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more |
Security | Jan 13, 2026 | 53 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073696 Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) |
Security | Jan 13, 2026 | 37 | KEV1 | 0.1979 | 8.8 |
| Patch now | KB5073698 Windows Server 2012, Windows Server 2012 (Server Core installation) |
Security | Jan 13, 2026 | 36 | KEV1 | 0.1979 | 8.8 |
| Urgent | KB5073695 Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |
Security | Jan 13, 2026 | 28 | None | 0.1979 | 8.8 |
| Urgent | KB5073699 Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |
Security | Jan 13, 2026 | 28 | None | 0.1979 | 8.8 |
| Urgent | KB5073697 Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation), Windows Server 2008 for x64-based Systems Service Pack 2 and 1 more |
Security | Jan 13, 2026 | 26 | None | 0.1979 | 8.8 |
| Urgent | KB5073700 Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation), Windows Server 2008 for x64-based Systems Service Pack 2 and 1 more |
Security | Jan 13, 2026 | 26 | None | 0.1979 | 8.8 |
| Urgent | KB5002831 Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition) |
Security | Jan 13, 2026 | 3 | None | 0.0065 | 7.8 |
| Urgent | KB5002826 Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) |
Security | Jan 13, 2026 | 3 | None | 0.0065 | 8.4 |
| Urgent | KB5002824 Office Online Server |
Security | Jan 13, 2026 | 3 | None | 0.0062 | 7.8 |
| High | KB5002825 Microsoft SharePoint Server 2019 |
Security | Jan 13, 2026 | 6 | None | 0.1844 | 8.8 |
| High | KB5002828 Microsoft SharePoint Enterprise Server 2016 |
Security | Jan 13, 2026 | 6 | None | 0.1844 | 8.8 |
| High | KB5002822 Microsoft SharePoint Server Subscription Edition |
Security | Jan 13, 2026 | 5 | None | 0.1844 | 8.8 |
| High | KB5002823 Microsoft SharePoint Server 2019 |
Security | Jan 13, 2026 | 2 | None | 0.1844 | 8.8 |
| High | KB5002827 Microsoft SharePoint Enterprise Server 2016 |
Security | Jan 13, 2026 | 2 | None | 0.1844 | 8.8 |
| High | KB5072936 Microsoft SQL Server 2022 for x64-based Systems (CU 22) |
Security | Jan 13, 2026 | 1 | None | 0.0125 | 7.2 |
| High | KB5073031 Microsoft SQL Server 2022 for x64-based Systems (GDR) |
Security | Jan 13, 2026 | 1 | None | 0.0125 | 7.2 |
| High | KB5073177 Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Security | Jan 13, 2026 | 1 | None | 0.0125 | 7.2 |
| High | KB5002829 Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition) |
Security | Jan 13, 2026 | 1 | None | 0.0060 | 7.8 |
macOS
| Distribution | Fixes | CVEs fixed | Closing exploited CVEs | Patch now |
|---|---|---|---|---|
| Ubuntu | 11,171 | 1,947 | 172 | 172 |
| Debian | 527 | 497 | 3 | 3 |
| Red Hat | 159 | 333 | 2 | 2 |
Highest priority this month
| Priority | Fix | Released | CVEs | Exploited | Max EPSS | Max CVSS |
|---|---|---|---|---|---|---|
| Patch now | RHSA-2025:23700 webkit2gtk3, webkit2gtk3-devel, webkit2gtk3-jsc and 1 more on RHEL 9 |
Jan 16, 2026 | 7 | KEV2 | 0.5533 | 8.8 |
| Patch now | RHSA-2025:23663 webkit2gtk3, webkit2gtk3-devel, webkit2gtk3-jsc and 1 more on RHEL 8 |
Jan 16, 2026 | 7 | KEV2 | 0.5533 | 8.8 |
| Patch now | gir1.2-javascriptcoregtk-4.1 2.46.4-0ubuntu0.24.10.1 gir1.2-javascriptcoregtk-4.1 on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | gir1.2-javascriptcoregtk-6.0 2.46.4-0ubuntu0.24.10.1 gir1.2-javascriptcoregtk-6.0 on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | gir1.2-webkit-6.0 2.46.4-0ubuntu0.24.10.1 gir1.2-webkit-6.0 on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | gir1.2-webkit2-4.1 2.46.4-0ubuntu0.24.10.1 gir1.2-webkit2-4.1 on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | libjavascriptcoregtk-4.0-bin 2.46.4-0ubuntu0.24.10.1 libjavascriptcoregtk-4.0-bin on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | libjavascriptcoregtk-4.1-0 2.46.4-0ubuntu0.24.10.1 libjavascriptcoregtk-4.1-0 on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | libjavascriptcoregtk-6.0-1 2.46.4-0ubuntu0.24.10.1 libjavascriptcoregtk-6.0-1 on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
| Patch now | libjavascriptcoregtk-bin 2.46.4-0ubuntu0.24.10.1 libjavascriptcoregtk-bin on Ubuntu 24.10 (oracular) |
Jan 16, 2026 | 2 | KEV2 | 0.2195 | 8.8 |
Patch Tuesday, month by month
CVEs Microsoft released on each Patch Tuesday, counted by original release date and excluding Azure Linux, the same way the industry trackers count. Select a bar to see that month above.
Show as a table
| Month | CVEs | Critical | Security updates | Exploited at release | Write-up |
|---|---|---|---|---|---|
| Oct 2026 | 1,420 | 80 | 51 | 1 | Read |
| Sep 2026 | 1,004 | 113 | 57 | 2 | Read |
| Aug 2026 | 710 | 84 | 58 | 1 | Read |
| Jul 2026 | 574 | 57 | 56 | 3 | Read |
| Jun 2026 | 246 | 30 | 28 | 0 | Read |
| May 2026 | 114 | 15 | 40 | 0 | Read |
| Apr 2026 | 176 | 7 | 50 | 2 | Read |
| Mar 2026 | 78 | 3 | 39 | 0 | Read |
| Feb 2026 | 53 | 2 | 29 | 6 | Read |
| Jan 2026 | 116 | 8 | 26 | 1 | Read |
| Dec 2025 | 72 | 0 | 29 | 1 | Read |
| Nov 2025 | 64 | 4 | 31 | 1 | None |
Third-party apps
Apps with vulnerabilities published, or added to CISA's Known Exploited Vulnerabilities catalog, in the last 90 days. Most urgent first. Updating to the latest version covers every vulnerability counted here.
Windows apps
All Windows app fixesThe 50 most urgent of 488 apps.
macOS apps
13 apps.
| Priority | App | Latest version | CVEs | Exploited | Max EPSS | Max CVSS | Most urgent fix |
|---|---|---|---|---|---|---|---|
| Patch now | Microsoft Edge Microsoft |
156.0.4314.58 | 1,239 | KEV3 | 0.0981 | 9.8 | Microsoft Edge 154.0.4258.62 |
| Patch now | Google Chrome Google |
157.0.8103.39 | 1,442 | KEV2 | 0.0351 | 9.8 | Google Chrome 153.0.8010.37 |
| Urgent | Microsoft Visual Studio Code Microsoft |
1.145.0 | 30 | None | 0.0106 | 9.6 | Microsoft Visual Studio Code 1.133.0 |
| Urgent | Mozilla Thunderbird Mozilla |
159.0 | 236 | None | 0.0072 | 10.0 | Mozilla Thunderbird 154.0 |
| Urgent | Mozilla Firefox Mozilla |
159.0.1 | 230 | None | 0.0072 | 10.0 | Mozilla Firefox 153.5.0 |
| Urgent | PyCharm JetBrains |
2026.2.4 | 4 | None | 0.0029 | 9.0 | PyCharm 2026.2.4 |
| Urgent | WebStorm JetBrains |
2026.2.4 | 2 | None | 0.0029 | 9.0 | WebStorm 2026.2.4 |
| High | Docker Desktop Docker |
4.98.0 | 2 | None | 0.0044 | 7.8 | Docker Desktop 4.86.0 |
| High | VLC media player VideoLAN |
3.0.24 | 2 | None | 0.0024 | 7.3 | VLC media player 3.0.24 |
| High | Parallels Desktop Parallels |
27.1.0 | 1 | None | 0.0017 | 7.8 | Parallels Desktop 26.4.1 |
| Routine | Microsoft Defender Microsoft |
101.26092.0012 | 1 | None | 0.0048 | 5.5 | Microsoft Defender 101.26042.0020 |
| Routine | OneDrive Microsoft |
26.189.0928 | 1 | None | 0.0039 | 6.7 | OneDrive 26.098.0524 |
| Routine | KeePassXC KeePassXC |
2.8.0 | 2 | None | 0.0014 | 4.3 | KeePassXC 2.8.0 |
All fixes
One row per thing you install: a Microsoft KB, an app version, a macOS update or a Linux advisory. Sorted by priority, then by exploited CVEs closed, then by highest EPSS.
| Priority | Fix | Platform | Released | CVEs | Exploited | Max EPSS | Max CVSS |
|---|---|---|---|---|---|---|---|
| Patch now | Google Chrome 156.0.8078.80
Google Chrome |
Windows apps | Oct 29, 2026 | 204 | KEV4 | 0.5496 | 9.8 |
| Patch now | Google Chrome Beta 158.0.8127.2
Google Chrome Beta |
Windows apps | Oct 28, 2026 | 201 | KEV4 | 0.5496 | 9.8 |
| Patch now | Google Chrome Dev 159.0.8130.0
Google Chrome Dev |
Windows apps | Oct 30, 2026 | 174 | KEV3 | 0.1374 | 9.8 |
| Patch now | RHSA-2026:87080
apcu-panel, libzip, libzip-devel and 34 more on RHEL 8 |
Linux | Oct 24, 2026 | 12 | KEV2 | 1.0000 | 9.8 |
| Patch now | RHSA-2026:87071
php8.4 on RHEL 10 |
Linux | Oct 24, 2026 | 3 | KEV2 | 1.0000 | 9.8 |
| Patch now | RHSA-2026:87079
apcu-panel, php-pecl-apcu, php-pecl-apcu-devel and 4 more on RHEL 9 |
Linux | Oct 24, 2026 | 3 | KEV2 | 1.0000 | 9.8 |
| Patch now | RHSA-2026:87151
php, php-bcmath, php-cli and 22 more on RHEL 9 |
Linux | Oct 24, 2026 | 3 | KEV2 | 1.0000 | 9.8 |
| Patch now | RHSA-2026:87073
php-pecl-xdebug3 on RHEL 8 |
Linux | Oct 24, 2026 | 3 | KEV2 | 1.0000 | 9.8 |
| Patch now | RHSA-2026:88561
php on RHEL 10 |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | libapache2-mod-php8.3 8.3.6-0ubuntu0.24.04.13
libapache2-mod-php8.3 on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | libphp8.3-embed 8.3.6-0ubuntu0.24.04.13
libphp8.3-embed on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3 8.3.6-0ubuntu0.24.04.13
php8.3 on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-bcmath 8.3.6-0ubuntu0.24.04.13
php8.3-bcmath on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-bz2 8.3.6-0ubuntu0.24.04.13
php8.3-bz2 on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-cgi 8.3.6-0ubuntu0.24.04.13
php8.3-cgi on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-cli 8.3.6-0ubuntu0.24.04.13
php8.3-cli on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-common 8.3.6-0ubuntu0.24.04.13
php8.3-common on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-curl 8.3.6-0ubuntu0.24.04.13
php8.3-curl on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-dba 8.3.6-0ubuntu0.24.04.13
php8.3-dba on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-enchant 8.3.6-0ubuntu0.24.04.13
php8.3-enchant on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-fpm 8.3.6-0ubuntu0.24.04.13
php8.3-fpm on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-gd 8.3.6-0ubuntu0.24.04.13
php8.3-gd on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-gmp 8.3.6-0ubuntu0.24.04.13
php8.3-gmp on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-imap 8.3.6-0ubuntu0.24.04.13
php8.3-imap on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
| Patch now | php8.3-interbase 8.3.6-0ubuntu0.24.04.13
php8.3-interbase on Ubuntu 24.04.5 LTS (noble) |
Linux | Oct 24, 2026 | 2 | KEV2 | 1.0000 | 9.8 |
How priority is set
Four tiers with published rules, the same rules the Patchblox Vulnerability Hub uses. A fix takes the highest tier of any CVE it closes.
Exploited in the wild: the vendor reports exploitation, or the CVE is in CISA's Known Exploited Vulnerabilities catalog.
The vendor rates exploitation as more likely, or rates the CVE Critical.
CVSS 7.0 or higher, or rated High by the vendor when no CVSS score is published.
Everything else. Still worth installing on your normal schedule.
EPSS is shown as context and breaks ties within a tier. It does not move a CVE between tiers: a probability model should not outrank a confirmed exploitation report.
Where the data comes from
This list is everyone's. Yours is shorter.
The tracker tells you what's exploited and what fixes it. Patchblox tells you which of your machines are still exposed, on every platform, and deploys the fix on Windows and Linux.
- Works from the Intune, Entra and Azure Update Manager data you already have
- Matches every installed app and OS build to the fix that closes its CVEs
- Deploys through rings with validation, then confirms the exposure closed