March 2026 security updates: Microsoft Patch Tuesday, macOS and Linux
Microsoft's Patch Tuesday on March 10, 2026 fixed 78 CVEs (3 critical, 0 exploited at release) in 39 security updates. Apple released 3 macOS updates fixing 88 CVEs. Debian, Ubuntu, Red Hat and Fedora released 2,177 Linux fixes for 1,011 CVEs. Every March 2026 security update, ranked by whether its vulnerabilities are being exploited.
Which of your machines are still exposed? Get a demo.
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 March 2026Patch Tuesday was March 10, 2026: 78 CVEs (3 critical) in 39 security updates, 0 exploited at release. Read the write-up
Show as a table
| Product family | CVEs | Patch now | Urgent | High | Routine | Exploited | Most urgent fix |
|---|---|---|---|---|---|---|---|
| Windows Server | 45 | 0 | 6 | 33 | 6 | 0 | KB5078737 |
| Windows 10 | 43 | 0 | 6 | 29 | 8 | 0 | KB5078885 |
| Windows 11 | 43 | 0 | 6 | 31 | 6 | 0 | KB5078883 |
| Microsoft Office | 6 | 0 | 2 | 4 | 0 | 0 | KB5002848 |
| SharePoint Server | 4 | 0 | 1 | 3 | 0 | 0 | KB5002845 |
| .NET and Visual Studio | 3 | 0 | 0 | 3 | 0 | 0 | KB5081276 |
| SQL Server | 3 | 0 | 0 | 3 | 0 | 0 | KB5077466 |
| Priority | Update | Type | Released | CVEs | Exploited | Max EPSS | Max CVSS |
|---|---|---|---|---|---|---|---|
| Urgent | KB5078885 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 | Mar 10, 2026 | 43 | None | 0.0516 | 8.8 |
| Urgent | KB5078737 Windows Server 2022, Windows Server 2022 (Server Core installation) |
ServicingStack | Mar 10, 2026 | 42 | None | 0.0516 | 8.8 |
| Urgent | KB5078883 Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems |
ServicingStack | Mar 10, 2026 | 41 | None | 0.0516 | 8.8 |
| Urgent | KB5079473 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 | Mar 10, 2026 | 41 | None | 0.0516 | 8.8 |
| Urgent | KB5078734 Windows Server 2022, 23H2 Edition (Server Core installation) |
ServicingStack | Mar 10, 2026 | 40 | None | 0.0516 | 8.8 |
| Urgent | KB5078752 Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 1 more |
Security | Mar 10, 2026 | 40 | None | 0.0516 | 8.8 |
| Urgent | KB5078766 Windows Server 2022, Windows Server 2022 (Server Core installation) |
ServicingStack | Mar 10, 2026 | 40 | None | 0.0516 | 8.8 |
| Urgent | KB5079466 Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems |
ServicingStack | Mar 10, 2026 | 40 | None | 0.0516 | 8.8 |
| Urgent | KB5078736 Windows Server 2025, Windows Server 2025 (Server Core installation) |
ServicingStack | Mar 10, 2026 | 39 | None | 0.0516 | 8.8 |
| Urgent | KB5078740 Windows Server 2025, Windows Server 2025 (Server Core installation) |
Security | Mar 10, 2026 | 39 | None | 0.0516 | 8.8 |
| Urgent | KB5079420 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 |
ServicingStack | Mar 10, 2026 | 38 | None | 0.0516 | 8.8 |
| Urgent | KB5078938 Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more |
Security | Mar 10, 2026 | 35 | None | 0.0516 | 8.8 |
| Urgent | KB5078774 Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) |
Security | Mar 10, 2026 | 32 | None | 0.0516 | 8.8 |
| Urgent | KB5078775 Windows Server 2012, Windows Server 2012 (Server Core installation) |
Security | Mar 10, 2026 | 31 | None | 0.0516 | 8.8 |
| Urgent | KB5002845 Microsoft SharePoint Server 2019 |
Security | Mar 10, 2026 | 4 | None | 0.0343 | 8.8 |
| Urgent | KB5002850 Microsoft SharePoint Enterprise Server 2016 |
Security | Mar 10, 2026 | 4 | None | 0.0343 | 8.8 |
| Urgent | KB5002843 Microsoft SharePoint Server Subscription Edition |
Security | Mar 10, 2026 | 3 | None | 0.0158 | 8.8 |
| Urgent | KB5002847 Microsoft SharePoint Server 2019 |
Security | Mar 10, 2026 | 1 | None | 0.0061 | 8.4 |
| Urgent | KB5002848 Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) |
Security | Mar 10, 2026 | 1 | None | 0.0061 | 8.4 |
| Urgent | KB5002851 Microsoft SharePoint Enterprise Server 2016 |
Security | Mar 10, 2026 | 1 | None | 0.0061 | 8.4 |
| Urgent | KB5002838 Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) |
Security | Mar 10, 2026 | 1 | None | 0.0054 | 8.4 |
| High | KB5081276 .NET 10.0 runtime installed on Linux, .NET 10.0 runtime installed on Mac OS, .NET 10.0 runtime installed on Windows and 1 more |
Security | Mar 10, 2026 | 3 | None | 0.0318 | 7.8 |
| High | KB5081278 .NET 9.0 runtime installed on Linux, .NET 9.0 runtime installed on Mac OS, .NET 9.0 runtime installed on Windows and 1 more |
Security | Mar 10, 2026 | 2 | None | 0.0318 | 7.5 |
| High | KB5081277 ASP.NET Core 8.0 |
Security | Mar 10, 2026 | 1 | None | 0.0318 | 7.5 |
| High | KB5077466 Microsoft SQL Server 2025 for x64-based Systems (CU2) |
Security | Mar 10, 2026 | 3 | None | 0.0166 | 8.8 |
| High | KB5077468 Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Security | Mar 10, 2026 | 3 | None | 0.0166 | 8.8 |
| High | KB5077464 Microsoft SQL Server 2022 for x64-based Systems (CU 23) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077465 Microsoft SQL Server 2022 for x64-based Systems (GDR) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077469 Microsoft SQL Server 2019 for x64-based Systems (CU 32) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077470 Microsoft SQL Server 2019 for x64-based Systems (GDR) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077471 Microsoft SQL Server 2017 for x64-based Systems (CU 31) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077472 Microsoft SQL Server 2017 for x64-based Systems (GDR) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077473 Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature Pack |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5077474 Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR) |
Security | Mar 10, 2026 | 2 | None | 0.0166 | 8.8 |
| High | KB5078738 Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2 and 1 more |
Security | Mar 10, 2026 | 1 | None | 0.0139 | 7.5 |
| High | KB5084597 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 | Mar 10, 2026 | 3 | None | 0.0100 | 8.0 |
| High | KB5002846 Office Online Server |
Security | Mar 10, 2026 | 4 | None | 0.0055 | 8.4 |
| High | KB5002849 Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition) |
Security | Mar 10, 2026 | 4 | None | 0.0055 | 8.4 |
| High | KB5002718 Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition) |
Security | Mar 10, 2026 | 1 | None | 0.0055 | 7.8 |
macOS
| Priority | Apple update | Released | CVEs | Exploited | Max EPSS | Max CVSS |
|---|---|---|---|---|---|---|
| Urgent | Tahoe 26.4 Tahoe |
Mar 24, 2026 | 83 | None | 0.0153 | 9.3 |
| Urgent | Sequoia 15.7.5 Sequoia |
Mar 24, 2026 | 60 | None | 0.0153 | 9.3 |
| Urgent | Sonoma 14.8.5 Sonoma |
Mar 24, 2026 | 56 | None | 0.0153 | 9.3 |
| Distribution | Fixes | CVEs fixed | Closing exploited CVEs | Patch now |
|---|---|---|---|---|
| Ubuntu | 1,241 | 170 | ||
| Debian | 784 | 749 | 3 | 3 |
| Red Hat | 152 | 272 |
Highest priority this month
| Priority | Fix | Released | CVEs | Exploited | Max EPSS | Max CVSS |
|---|---|---|---|---|---|---|
| Patch now | DEBIAN-CVE-2026-3910 chromium on Debian 12.15 (bookworm), Debian 13.5 (trixie), Debian 14 |
Mar 13, 2026 | 1 | KEV1 | 0.0269 | 8.8 |
| Patch now | DSA-6165-1 chromium on Debian 12.15 (bookworm), Debian 13.5 (trixie) |
Mar 16, 2026 | 1 | KEV1 | 0.0234 | 8.8 |
| Patch now | DEBIAN-CVE-2026-3909 chromium, webkit2gtk, wpewebkit on Debian 13.5 (trixie), Debian 14 |
Mar 13, 2026 | 1 | KEV1 | 0.0234 | 8.8 |
| Urgent | inetutils-ftp 2:1.9.4-11ubuntu0.2+esm4 inetutils-ftp on Ubuntu 20.04 LTS (focal) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
| Urgent | inetutils-ftp 2:1.9.4-3ubuntu0.1+esm5 inetutils-ftp on Ubuntu 18.04.6 LTS (bionic) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
| Urgent | inetutils-ftp 2:2.2-2ubuntu0.2+esm1 inetutils-ftp on Ubuntu 22.04.1 LTS (jammy) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
| Urgent | inetutils-ftp 2:2.5-3ubuntu4.2 inetutils-ftp on Ubuntu 24.04.5 LTS (noble) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
| Urgent | inetutils-ftp 2:2.6-1ubuntu3.2 inetutils-ftp on Ubuntu 25.10 (questing) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
| Urgent | inetutils-ftpd 2:1.9.4-11ubuntu0.2+esm4 inetutils-ftpd on Ubuntu 20.04 LTS (focal) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
| Urgent | inetutils-ftpd 2:1.9.4-3ubuntu0.1+esm5 inetutils-ftpd on Ubuntu 18.04.6 LTS (bionic) |
Mar 16, 2026 | 3 | None | 0.4483 | 9.8 |
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