# Microsoft Teams Classic security updates

The latest version of Microsoft Teams Classic is 1.8.00.27654, released October 3, 2025. Patch Radar has 2 security fixes for Microsoft Teams Classic, closing 3 CVEs, 1 of which is being exploited. The newest security fix is Microsoft Teams Classic 1.6.00.26474, released September 22, 2023. Version 1.8.00.27654 adds no new CVE fixes and includes all of them. 3 CVEs have no fix yet.

- Web page: https://patchblox.com/security/product/windows-app/microsoft-teams-classic
- Platform: Windows apps
- Vendor: Microsoft
- Latest version: 1.8.00.27654 (Oct 3, 2025)
- Supported: yes

## CVEs with no fix yet

| CVE | Priority | Title | Status |
|---|---|---|---|
| [CVE-2025-53783](https://patchblox.com/security/data/cve/CVE-2025-53783.md) | High | Microsoft Teams Remote Code Execution Vulnerability | no-fix |
| [CVE-2020-10146](https://patchblox.com/security/data/cve/CVE-2020-10146.md) | Routine | Microsoft Teams displayName stored cross-site scripting vulnerability | no-fix |
| [CVE-2023-24881](https://patchblox.com/security/data/cve/CVE-2023-24881.md) | Routine | Microsoft Teams Information Disclosure Vulnerability | no-fix |

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| Microsoft Teams Classic 1.8.00.27654 (latest, includes every fix below) | Oct 3, 2025 | 1.8.00.27654 |  |  |  |
| [Microsoft Teams Classic 1.6.00.26474](https://patchblox.com/security/data/fix/windows-app/microsoft.teams.classic-1.6.00.26474.md) | Sep 22, 2023 | 1.6.00.26474 | Patch now | 1 | 1 |
| [Microsoft Teams Classic 1.6.00.20074](https://patchblox.com/security/data/fix/windows-app/microsoft.teams.classic-1.6.00.20074.md) | Jul 19, 2023 | 1.6.00.20074 | Urgent | 2 | 0 |

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Data as of 2026-11-10T20:03:11Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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