---
id: CVE-2026-92369
title: >-
  TeamViewer Full Client and Host prior to version 15.82 on Windows contain a
  TOCTOU race condition in the installer rollback mechanism
summary: >-
  TeamViewer Full Client and Host prior to version 15.82 on Windows contain a
  TOCTOU race condition in the installer rollback mechanism. A local
  low-privileged attacker can replace rollback backup files stored in a
  user-writable temporary …
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-367
vendor: TeamViewer
product: Full Client
affected:
  - full_client >= 15.0 < 15.82
  - >-
    full_client >= 15.64.0 (Legacy Windows 7 & 8) < 15.64.8 (Legacy Windows 7 &
    8)
  - full_client >= 14.7.0 < 14.7.48855
  - full_client >= 13.2.0 < 13.2.36230
  - Host >= 15.0 < 15.82
  - Host >= 15.64.0 (Legacy Windows 7 & 8) < 15.64.8 (Legacy Windows 7 & 8)
  - Host >= 14.7.0 < 14.7.48855
  - Host >= 13.2.0 < 13.2.36230
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T16:17:14.890'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92369'
references:
  - url: >-
      https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/
    label: psirt@teamviewer.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T16:39:33.270Z'
---

## Overview

TeamViewer Full Client and Host prior to version 15.82 on Windows contain a TOCTOU race condition in the installer rollback mechanism. A local low-privileged attacker can replace rollback backup files stored in a user-writable temporary directory before they are restored by an elevated installer, resulting in privilege escalation to NT AUHORITY/SYSTEM. Exploitation requires successful timing of the race condition and a rollback during installation or update.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.