# Security updates released in May 2026 - Web page: https://patchblox.com/security/patch-radar/2026/05 | Platform | Fixes | CVEs | Fixes with exploited CVEs | Patch now | |---|---:|---:|---:|---:| | Microsoft | 59 | 96 | 3 | 3 | | macOS | 3 | 80 | 0 | 0 | | Linux | 6,017 | 3,077 | 57 | 57 | ## Patch Tuesday, May 12, 2026 114 CVEs, 15 Critical, 0 exploited, 0 publicly disclosed, in 40 security updates. ## Microsoft products with the most CVEs fixed | Product | CVEs | Exploited | Patch now | |---|---:|---:|---:| | Windows Server | 67 | 0 | 0 | | Windows 11 | 63 | 0 | 0 | | Windows 10 | 54 | 0 | 0 | | Microsoft Office | 12 | 0 | 0 | | SharePoint Server | 9 | 1 | 1 | | .NET and Visual Studio | 4 | 0 | 0 | | Dynamics 365 | 4 | 0 | 0 | | SQL Server | 1 | 0 | 0 | ## Microsoft updates | Fix | Products | Released | Priority | CVEs | Exploited | Top CVE | |---|---|---|---|---:|---:|---| | [KB5002863](https://patchblox.com/security/data/fix/microsoft/kb5002863.md) | Microsoft SharePoint Server Subscription Edition | May 12, 2026 | Patch now | 9 | 1 | CVE-2026-45659 | | [KB5002868](https://patchblox.com/security/data/fix/microsoft/kb5002868.md) | Microsoft SharePoint Enterprise Server 2016 | May 12, 2026 | Patch now | 9 | 1 | CVE-2026-45659 | | [KB5002870](https://patchblox.com/security/data/fix/microsoft/kb5002870.md) | Microsoft SharePoint Server 2019 | May 12, 2026 | Patch now | 9 | 1 | CVE-2026-45659 | | [KB5087423](https://patchblox.com/security/data/fix/microsoft/kb5087423.md) | Windows Server 2025, Windows Server 2025 (Server Core installation) | May 12, 2026 | Urgent | 66 | 0 | CVE-2026-41089 | | [KB5087539](https://patchblox.com/security/data/fix/microsoft/kb5087539.md) | Windows Server 2025, Windows Server 2025 (Server Core installation) | May 12, 2026 | Urgent | 66 | 0 | CVE-2026-41089 | | [KB5087541](https://patchblox.com/security/data/fix/microsoft/kb5087541.md) | Windows Server 2022, 23H2 Edition (Server Core installation) | May 12, 2026 | Urgent | 58 | 0 | CVE-2026-41089 | | [KB5087545](https://patchblox.com/security/data/fix/microsoft/kb5087545.md) | Windows Server 2022, Windows Server 2022 (Server Core installation) | May 12, 2026 | Urgent | 58 | 0 | CVE-2026-41089 | | [KB5087424](https://patchblox.com/security/data/fix/microsoft/kb5087424.md) | Windows Server 2022, Windows Server 2022 (Server Core installation) | May 12, 2026 | Urgent | 56 | 0 | CVE-2026-41089 | | [KB5087538](https://patchblox.com/security/data/fix/microsoft/kb5087538.md) | Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 1 more | May 12, 2026 | Urgent | 55 | 0 | CVE-2026-41089 | | [KB5087537](https://patchblox.com/security/data/fix/microsoft/kb5087537.md) | Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more | May 12, 2026 | Urgent | 47 | 0 | CVE-2026-41089 | | [KB5087471](https://patchblox.com/security/data/fix/microsoft/kb5087471.md) | Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) | May 12, 2026 | Urgent | 42 | 0 | CVE-2026-41089 | | [KB5087470](https://patchblox.com/security/data/fix/microsoft/kb5087470.md) | Windows Server 2012, Windows Server 2012 (Server Core installation) | May 12, 2026 | Urgent | 39 | 0 | CVE-2026-41089 | | [KB5089548](https://patchblox.com/security/data/fix/microsoft/kb5089548.md) | Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 Version 26H1 for x64-based Systems - extra, Windows 11 version 26H1 for x64-based Systems | May 12, 2026 | Urgent | 62 | 0 | CVE-2026-40369 | | [KB5089466](https://patchblox.com/security/data/fix/microsoft/kb5089466.md) | 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 | May 12, 2026 | Urgent | 61 | 0 | CVE-2026-40369 | | [KB5089549](https://patchblox.com/security/data/fix/microsoft/kb5089549.md) | 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 | May 12, 2026 | Urgent | 61 | 0 | CVE-2026-40369 | | [KB5002858](https://patchblox.com/security/data/fix/microsoft/kb5002858.md) | Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition) | May 12, 2026 | Urgent | 6 | 0 | CVE-2026-40364 | | [KB5087420](https://patchblox.com/security/data/fix/microsoft/kb5087420.md) | Windows 11 Version 23H2 for ARM64-based Systems | May 12, 2026 | Urgent | 56 | 0 | CVE-2026-41096 | | [KB5087544](https://patchblox.com/security/data/fix/microsoft/kb5087544.md) | Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems | May 12, 2026 | Urgent | 54 | 0 | CVE-2026-40398 | | [KB5078943](https://patchblox.com/security/data/fix/microsoft/kb5078943.md) | Microsoft Dynamics 365 (on-premises) version 9.0, Microsoft Dynamics 365 (on-premises) version 9.1 | May 12, 2026 | Urgent | 3 | 0 | CVE-2026-42898 | | [KB5002869](https://patchblox.com/security/data/fix/microsoft/kb5002869.md) | Microsoft SharePoint Enterprise Server 2016 | May 20, 2026 | Urgent | 1 | 0 | CVE-2026-40367 | | [KB5002872](https://patchblox.com/security/data/fix/microsoft/kb5002872.md) | Microsoft SharePoint Server 2019 | May 20, 2026 | Urgent | 1 | 0 | CVE-2026-40367 | | [KB5002866](https://patchblox.com/security/data/fix/microsoft/kb5002866.md) | Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) | May 12, 2026 | Urgent | 2 | 0 | CVE-2026-40363 | | [KB5093446](https://patchblox.com/security/data/fix/microsoft/kb5093446.md) | .NET 10.0 runtime installed on Linux, .NET 10.0 runtime installed on Mac OS, .NET 10.0 runtime installed on Windows | May 12, 2026 | High | 4 | 0 | CVE-2026-42899 | | [KB5093447](https://patchblox.com/security/data/fix/microsoft/kb5093447.md) | .NET 8.0 runtime installed on Linux, .NET 8.0 runtime installed on Mac OS, .NET 8.0 runtime installed on Windows | May 12, 2026 | High | 4 | 0 | CVE-2026-42899 | | [KB5093448](https://patchblox.com/security/data/fix/microsoft/kb5093448.md) | .NET 9.0 runtime installed on Linux, .NET 9.0 runtime installed on Mac OS, .NET 9.0 runtime installed on Windows | May 12, 2026 | High | 4 | 0 | CVE-2026-42899 | | [KB5087048](https://patchblox.com/security/data/fix/microsoft/kb5087048.md) | Microsoft .NET Framework 3.5 on Windows Server 2012 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087049](https://patchblox.com/security/data/fix/microsoft/kb5087049.md) | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087051](https://patchblox.com/security/data/fix/microsoft/kb5087051.md) | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087053](https://patchblox.com/security/data/fix/microsoft/kb5087053.md) | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems and 1 more | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087054](https://patchblox.com/security/data/fix/microsoft/kb5087054.md) | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087055](https://patchblox.com/security/data/fix/microsoft/kb5087055.md) | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 26H1 for x64-based Systems | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087058](https://patchblox.com/security/data/fix/microsoft/kb5087058.md) | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087059](https://patchblox.com/security/data/fix/microsoft/kb5087059.md) | Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087061](https://patchblox.com/security/data/fix/microsoft/kb5087061.md) | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087063](https://patchblox.com/security/data/fix/microsoft/kb5087063.md) | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2, Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087064](https://patchblox.com/security/data/fix/microsoft/kb5087064.md) | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems and 1 more | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087065](https://patchblox.com/security/data/fix/microsoft/kb5087065.md) | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows Server 2016 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087066](https://patchblox.com/security/data/fix/microsoft/kb5087066.md) | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087067](https://patchblox.com/security/data/fix/microsoft/kb5087067.md) | Microsoft .NET Framework 4.8 on Windows Server 2012 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087068](https://patchblox.com/security/data/fix/microsoft/kb5087068.md) | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | May 18, 2026 | High | 2 | 0 | CVE-2026-35433 | | [KB5087062](https://patchblox.com/security/data/fix/microsoft/kb5087062.md) | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | May 18, 2026 | High | 1 | 0 | CVE-2026-32177 | | [KB5087069](https://patchblox.com/security/data/fix/microsoft/kb5087069.md) | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | May 18, 2026 | High | 1 | 0 | CVE-2026-32177 | | [KB5089270](https://patchblox.com/security/data/fix/microsoft/kb5089270.md) | Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature Pack | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5089271](https://patchblox.com/security/data/fix/microsoft/kb5089271.md) | Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5089899](https://patchblox.com/security/data/fix/microsoft/kb5089899.md) | Microsoft SQL Server 2025 for x64-based Systems (CU4) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5089900](https://patchblox.com/security/data/fix/microsoft/kb5089900.md) | Microsoft SQL Server 2022 for x64-based Systems (CU 24) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5090347](https://patchblox.com/security/data/fix/microsoft/kb5090347.md) | Microsoft SQL Server 2017 for x64-based Systems (GDR) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5090354](https://patchblox.com/security/data/fix/microsoft/kb5090354.md) | Microsoft SQL Server 2017 for x64-based Systems (CU 31) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5090407](https://patchblox.com/security/data/fix/microsoft/kb5090407.md) | Microsoft SQL Server 2019 for x64-based Systems (CU 32) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5090408](https://patchblox.com/security/data/fix/microsoft/kb5090408.md) | Microsoft SQL Server 2019 for x64-based Systems (GDR) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5091158](https://patchblox.com/security/data/fix/microsoft/kb5091158.md) | Microsoft SQL Server 2022 for x64-based Systems (GDR) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5091223](https://patchblox.com/security/data/fix/microsoft/kb5091223.md) | Microsoft SQL Server 2025 for x64-based Systems (GDR) | May 12, 2026 | High | 1 | 0 | CVE-2026-40370 | | [KB5002865](https://patchblox.com/security/data/fix/microsoft/kb5002865.md) | Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition) | May 12, 2026 | High | 3 | 0 | CVE-2026-40360 | | [KB5002871](https://patchblox.com/security/data/fix/microsoft/kb5002871.md) | Office Online Server | May 12, 2026 | High | 3 | 0 | CVE-2026-40360 | | [KB5086068](https://patchblox.com/security/data/fix/microsoft/kb5086068.md) | Microsoft Dynamics 365 Business Central 2024 Release Wave 2 | May 12, 2026 | High | 1 | 0 | CVE-2026-40417 | | [KB5086069](https://patchblox.com/security/data/fix/microsoft/kb5086069.md) | Microsoft Dynamics 365 Business Central Release Wave 1 2025 | May 12, 2026 | High | 1 | 0 | CVE-2026-40417 | | [KB5086070](https://patchblox.com/security/data/fix/microsoft/kb5086070.md) | Microsoft Dynamics 365 Business Central Release Wave 2 2025 | May 12, 2026 | High | 1 | 0 | CVE-2026-40417 | | [KB5093780](https://patchblox.com/security/data/fix/microsoft/kb5093780.md) | Microsoft Dynamics 365 Business Central 2026 Release Wave 1 | May 12, 2026 | High | 1 | 0 | CVE-2026-40417 | | [KB5002578](https://patchblox.com/security/data/fix/microsoft/kb5002578.md) | Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition) | May 12, 2026 | Routine | 1 | 0 | CVE-2026-21530 | ## macOS updates | Fix | Products | Released | Priority | CVEs | Exploited | Top CVE | |---|---|---|---|---:|---:|---| | [Tahoe 26.5](https://patchblox.com/security/data/fix/macos/tahoe-26.5.md) | Tahoe | May 11, 2026 | High | 74 | 0 | CVE-2026-43661 | | [Sequoia 15.7.7](https://patchblox.com/security/data/fix/macos/sequoia-15.7.7.md) | Sequoia | May 11, 2026 | High | 46 | 0 | CVE-2026-43668 | | [Sonoma 14.8.7](https://patchblox.com/security/data/fix/macos/sonoma-14.8.7.md) | Sonoma | May 11, 2026 | High | 43 | 0 | CVE-2026-43668 | ## Linux, by distribution | Distribution | Fixes | CVEs | Fixes with exploited CVEs | Patch now | |---|---:|---:|---:|---:| | Ubuntu | 2,905 | 324 | 0 | 0 | | Debian | 2,217 | 2,217 | 2 | 2 | | Rocky Linux | 245 | 522 | 8 | 8 | | AlmaLinux | 213 | 358 | 14 | 14 | | Red Hat | 183 | 398 | 14 | 14 | | Amazon Linux | 125 | 761 | 6 | 6 | | Oracle Linux | 103 | 231 | 12 | 12 | | Fedora | 21 | 49 | 1 | 1 | | SUSE Linux Enterprise | 5 | 7 | 0 | 0 | Each row counts a CVE once for that distribution; the Linux total counts it once overall, so the rows can add up to more than the total. ## Most urgent Linux advisories | Fix | Products | Released | Priority | CVEs | Exploited | Top CVE | |---|---|---|---|---:|---:|---| | [RXSA-2026:13577](https://patchblox.com/security/data/fix/linux/rxsa-2026-13577.md) | kernel on rocky 8 | May 21, 2026 | Patch now | 7 | 1 | CVE-2026-31431 | | [RHSA-2026:13577](https://patchblox.com/security/data/fix/linux/rhsa-2026-13577.md) | bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8 | May 15, 2026 | Patch now | 7 | 1 | CVE-2026-31431 | | [RHSA-2026:13578](https://patchblox.com/security/data/fix/linux/rhsa-2026-13578.md) | kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8 | May 15, 2026 | Patch now | 7 | 1 | CVE-2026-31431 | | [ALSA-2026:13577](https://patchblox.com/security/data/fix/linux/alsa-2026-13577.md) | bpftool, kernel, kernel-abi-stablelists and 22 more on almalinux 8 | May 5, 2026 | Patch now | 7 | 1 | CVE-2026-31431 | | [ALSA-2026:13578](https://patchblox.com/security/data/fix/linux/alsa-2026-13578.md) | kernel-rt, kernel-rt-core, kernel-rt-debug and 7 more on almalinux 8 | May 5, 2026 | Patch now | 7 | 1 | CVE-2026-31431 | | [ALAS2023-2026-1649](https://patchblox.com/security/data/fix/linux/alas2023-2026-1649.md) | bpftool6.18, bpftool6.18-debuginfo, kernel-livepatch-6.18.20-41.237 and 15 more on amzn 2023 | May 4, 2026 | Patch now | 7 | 1 | CVE-2026-31431 | | [RLSA-2026:13578](https://patchblox.com/security/data/fix/linux/rlsa-2026-13578.md) | kernel-rt on rocky 8 | May 6, 2026 | Patch now | 6 | 1 | CVE-2026-31431 | | [ELSA-2026-13577](https://patchblox.com/security/data/fix/linux/elsa-2026-13577.md) | bpftool, kernel, kernel-abi-stablelists and 17 more on ol 8 | May 5, 2026 | Patch now | 6 | 1 | CVE-2026-31431 | | [ALAS2023-2026-1650](https://patchblox.com/security/data/fix/linux/alas2023-2026-1650.md) | bpftool6.12, bpftool6.12-debuginfo, kernel-livepatch-6.12.80-106.156 and 15 more on amzn 2023 | May 4, 2026 | Patch now | 5 | 1 | CVE-2026-31431 | | [ALAS2023-2026-1651](https://patchblox.com/security/data/fix/linux/alas2023-2026-1651.md) | bpftool, bpftool-debuginfo, kernel and 15 more on amzn 2023 | May 4, 2026 | Patch now | 5 | 1 | CVE-2026-31431 | --- Data as of 2026-11-10T07:50:38Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.