# CVE-2023-29336: Win32k Elevation of Privilege Vulnerability

CVE-2023-29336 is fixed in 16 products on 1 platform, first by KB5026363, released May 9, 2023. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on May 9, 2023. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/cve/CVE-2023-29336
- Priority: Patch now
- CVSS: 7.8 (Important)
- EPSS: 0.4119
- CISA KEV: listed May 9, 2023, federal due date May 30, 2023
- Exploited (vendor report): yes
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Detected
- Published: May 9, 2023
- Weakness: Use After Free
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29336

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.5921 | [KB5026363](https://patchblox.com/security/data/fix/microsoft/kb5026363.md) | May 9, 2023 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.5921 | [KB5026363](https://patchblox.com/security/data/fix/microsoft/kb5026363.md) | May 9, 2023 |
| Microsoft | Windows 10 for 32-bit Systems | 10240.19926 | [KB5026382](https://patchblox.com/security/data/fix/microsoft/kb5026382.md) | May 9, 2023 |
| Microsoft | Windows 10 for x64-based Systems | 10240.19926 | [KB5026382](https://patchblox.com/security/data/fix/microsoft/kb5026382.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB5026413](https://patchblox.com/security/data/fix/microsoft/kb5026413.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB5026426](https://patchblox.com/security/data/fix/microsoft/kb5026426.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB5026413](https://patchblox.com/security/data/fix/microsoft/kb5026413.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB5026426](https://patchblox.com/security/data/fix/microsoft/kb5026426.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB5026427](https://patchblox.com/security/data/fix/microsoft/kb5026427.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB5026408](https://patchblox.com/security/data/fix/microsoft/kb5026408.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) |  | [KB5026427](https://patchblox.com/security/data/fix/microsoft/kb5026427.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) |  | [KB5026408](https://patchblox.com/security/data/fix/microsoft/kb5026408.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB5026427](https://patchblox.com/security/data/fix/microsoft/kb5026427.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB5026408](https://patchblox.com/security/data/fix/microsoft/kb5026408.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) |  | [KB5026427](https://patchblox.com/security/data/fix/microsoft/kb5026427.md) | May 9, 2023 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) |  | [KB5026408](https://patchblox.com/security/data/fix/microsoft/kb5026408.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 |  | [KB5026419](https://patchblox.com/security/data/fix/microsoft/kb5026419.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 |  | [KB5026411](https://patchblox.com/security/data/fix/microsoft/kb5026411.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB5026419](https://patchblox.com/security/data/fix/microsoft/kb5026419.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB5026411](https://patchblox.com/security/data/fix/microsoft/kb5026411.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 R2 |  | [KB5026409](https://patchblox.com/security/data/fix/microsoft/kb5026409.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 R2 |  | [KB5026415](https://patchblox.com/security/data/fix/microsoft/kb5026415.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB5026409](https://patchblox.com/security/data/fix/microsoft/kb5026409.md) | May 9, 2023 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB5026415](https://patchblox.com/security/data/fix/microsoft/kb5026415.md) | May 9, 2023 |
| Microsoft | Windows Server 2016 | 14393.5921 | [KB5026363](https://patchblox.com/security/data/fix/microsoft/kb5026363.md) | May 9, 2023 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.5921 | [KB5026363](https://patchblox.com/security/data/fix/microsoft/kb5026363.md) | May 9, 2023 |

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Data as of 2026-11-08T13:06:02Z 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

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