---
id: "CVE-2026-92377"
kind: "vulnerability"
aliases: ["CVE-2026-92377"]
title: "TeamViewer for Windows: local low-privilege user gains SYSTEM code execution"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "teamviewer", "windows"]
not_affected_if: ["already-on-15.82-or-later", "no-local-untrusted-users"]
published_at: "2026-10-27T16:17:32+00:00"
first_seen_at: "2026-10-27T16:33:07+00:00"
updated_at: "2026-10-27T16:34:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92377", "first_seen_at": "2026-10-27T16:33:07+00:00"}]
---

# TeamViewer for Windows: local low-privilege user gains SYSTEM code execution

TeamViewer Full Client and Host for Windows before 15.82 has an access control flaw in its Patch Management update mechanism. A local user with low privileges can forge an IPC response, make the service load a malicious DLL from a user-writable temp directory, and run code as NT AUTHORITY\SYSTEM.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed TeamViewer version on Windows (Help > About TeamViewer, or the TeamViewer entry in Apps & features) and compare it with `15.82`.
- Confirm whether the Patch Management feature is in use; the sources do not say how to confirm this from configuration.

## Fix

- Update TeamViewer Full Client and Host for Windows to `15.82` or later.

## Timeline

- 2026-10-27T16:33:07+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-92377

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_