# KB5135243: November 2026 security update

KB5135243, released November 10, 2026, fixes 15 CVEs across 6 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/microsoft/kb5135243
- Platform: Microsoft
- Released: Nov 10, 2026
- Priority: High (Closes CVE-2026-70175, high severity)
- CVEs: 15, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5135243

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [.NET 8.0 installed on Linux](https://patchblox.com/security/data/product/microsoft/net-8.0-installed-on-linux.md) |  |  |
| [.NET 8.0 installed on Mac OS](https://patchblox.com/security/data/product/microsoft/net-8.0-installed-on-mac-os.md) |  |  |
| [.NET 8.0 installed on Windows](https://patchblox.com/security/data/product/microsoft/net-8.0-installed-on-windows.md) |  |  |
| [Microsoft.AspNetCore.SignalR.StackExchangeRedis on .NET 8.0 installed on Linux](https://patchblox.com/security/data/product/microsoft/microsoft.aspnetcore.signalr.stackexchangeredis-on-.net-8.0-installed-on-linux.md) |  |  |
| [Microsoft.AspNetCore.SignalR.StackExchangeRedis on .NET 8.0 installed on Mac OS](https://patchblox.com/security/data/product/microsoft/microsoft.aspnetcore.signalr.stackexchangeredis-on-.net-8.0-installed-on-mac-os.md) |  |  |
| [Microsoft.AspNetCore.SignalR.StackExchangeRedis on .NET 8.0 installed on Windows](https://patchblox.com/security/data/product/microsoft/microsoft.aspnetcore.signalr.stackexchangeredis-on-.net-8.0-installed-on-windows.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-70175](https://patchblox.com/security/data/cve/CVE-2026-70175.md) | High | ASP.NET Core | 9.4 | 0.0073 |  |
| [CVE-2026-114146](https://patchblox.com/security/data/cve/CVE-2026-114146.md) | High | ASP.NET Core | 9.0 | n/a |  |
| [CVE-2026-114151](https://patchblox.com/security/data/cve/CVE-2026-114151.md) | High | Visual Studio | 8.8 | n/a |  |
| [CVE-2026-114152](https://patchblox.com/security/data/cve/CVE-2026-114152.md) | High | Visual Studio | 8.8 | n/a |  |
| [CVE-2026-114158](https://patchblox.com/security/data/cve/CVE-2026-114158.md) | High | Visual Studio | 8.8 | n/a |  |
| [CVE-2026-114159](https://patchblox.com/security/data/cve/CVE-2026-114159.md) | High | Visual Studio | 8.8 | n/a |  |
| [CVE-2026-118745](https://patchblox.com/security/data/cve/CVE-2026-118745.md) | High | Visual Studio | 8.8 | n/a |  |
| [CVE-2026-105544](https://patchblox.com/security/data/cve/CVE-2026-105544.md) | High | .NET | 7.5 | n/a |  |
| [CVE-2026-109475](https://patchblox.com/security/data/cve/CVE-2026-109475.md) | High | .NET | 7.5 | n/a |  |
| [CVE-2026-109478](https://patchblox.com/security/data/cve/CVE-2026-109478.md) | High | ASP.NET Core | 7.5 | n/a |  |
| [CVE-2026-114147](https://patchblox.com/security/data/cve/CVE-2026-114147.md) | High | ASP.NET Core | 7.5 | n/a |  |
| [CVE-2026-114149](https://patchblox.com/security/data/cve/CVE-2026-114149.md) | High | ASP.NET Core | 7.5 | n/a |  |
| [CVE-2026-114154](https://patchblox.com/security/data/cve/CVE-2026-114154.md) | High | ASP.NET Core | 7.5 | n/a |  |
| [CVE-2026-114157](https://patchblox.com/security/data/cve/CVE-2026-114157.md) | High | ASP.NET Core | 7.5 | n/a |  |
| [CVE-2026-109476](https://patchblox.com/security/data/cve/CVE-2026-109476.md) | Routine | ASP.NET Core | 6.1 | n/a |  |

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Data as of 2026-11-11T07:45:43Z 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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