# KB5127683: October 2026 security update

KB5127683, released October 13, 2026, fixes 19 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb5127683
- Platform: Microsoft
- Released: Oct 13, 2026
- Priority: Urgent (Closes CVE-2026-96222, rated Critical)
- CVEs: 19, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5127683

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 21H2](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.8-on-windows-10-version-21h2.md) |  |  |
| [Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 22H2](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.8-on-windows-10-version-22h2.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-96222](https://patchblox.com/security/data/cve/CVE-2026-96222.md) | Urgent | Active Directory Federation Services (AD FS) | 9.4 | 0.0059 |  |
| [CVE-2026-70035](https://patchblox.com/security/data/cve/CVE-2026-70035.md) | High | .NET Framework | 8.8 | 0.0144 |  |
| [CVE-2026-83520](https://patchblox.com/security/data/cve/CVE-2026-83520.md) | High | .NET | 8.8 | 0.0144 |  |
| [CVE-2026-58280](https://patchblox.com/security/data/cve/CVE-2026-58280.md) | High | .NET | 9.4 | 0.0125 |  |
| [CVE-2026-69651](https://patchblox.com/security/data/cve/CVE-2026-69651.md) | High | .NET | 9.4 | 0.0125 |  |
| [CVE-2026-96958](https://patchblox.com/security/data/cve/CVE-2026-96958.md) | High | .NET | 7.5 | 0.0120 |  |
| [CVE-2026-96960](https://patchblox.com/security/data/cve/CVE-2026-96960.md) | High | .NET | 7.5 | 0.0120 |  |
| [CVE-2026-96233](https://patchblox.com/security/data/cve/CVE-2026-96233.md) | High | ASP.NET Core | 9.4 | 0.0099 |  |
| [CVE-2026-84008](https://patchblox.com/security/data/cve/CVE-2026-84008.md) | High | .NET | 7.5 | 0.0099 |  |
| [CVE-2026-96959](https://patchblox.com/security/data/cve/CVE-2026-96959.md) | High | .NET | 7.5 | 0.0097 |  |
| [CVE-2026-70174](https://patchblox.com/security/data/cve/CVE-2026-70174.md) | High | .NET | 8.8 | 0.0091 |  |
| [CVE-2026-97788](https://patchblox.com/security/data/cve/CVE-2026-97788.md) | High | Active Directory Federation Services (AD FS) | 7.5 | 0.0088 |  |
| [CVE-2026-85363](https://patchblox.com/security/data/cve/CVE-2026-85363.md) | High | .NET Framework | 8.8 | 0.0086 |  |
| [CVE-2026-102869](https://patchblox.com/security/data/cve/CVE-2026-102869.md) | High | .NET and Visual Studio | 8.8 | 0.0084 |  |
| [CVE-2026-70007](https://patchblox.com/security/data/cve/CVE-2026-70007.md) | High | .NET Framework | 8.8 | 0.0080 |  |
| [CVE-2026-108398](https://patchblox.com/security/data/cve/CVE-2026-108398.md) | High | .NET Framework | 8.8 | 0.0078 | Disclosed |
| [CVE-2026-96224](https://patchblox.com/security/data/cve/CVE-2026-96224.md) | High | .NET | 8.8 | 0.0076 |  |
| [CVE-2026-97801](https://patchblox.com/security/data/cve/CVE-2026-97801.md) | High | .NET Framework | 7.5 | 0.0073 |  |
| [CVE-2026-62886](https://patchblox.com/security/data/cve/CVE-2026-62886.md) | High | .NET | 7.8 | 0.0047 |  |

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Data as of 2026-11-07T06:34:28Z 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