# KB5122874: September 2026 security update

KB5122874, released September 8, 2026, fixes 1 CVE across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb5122874
- Platform: Microsoft
- Released: Sep 8, 2026
- Priority: Urgent (Closes CVE-2026-81955, rated Critical)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5122874

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 10 Version 1607 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1607-for-32-bit-systems.md) |  |  |
| [Windows 10 Version 1607 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1607-for-x64-based-systems.md) |  |  |
| [Windows Server 2016](https://patchblox.com/security/data/product/microsoft/windows-server-2016.md) |  |  |
| [Windows Server 2016 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2016-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-81955](https://patchblox.com/security/data/cve/CVE-2026-81955.md) | Urgent | Microsoft Graphics Component | 8.8 | 0.0084 |  |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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