CVE-2026-92369
High
Description
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.
SeverityHigh
CVSS7.3
Exploit probability—
Product
Full Client
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-367CWE-367
How to fix
Update
- TeamViewer Full Client15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855, 13.2.36230 or later
- TeamViewer Host15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855, 13.2.36230 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| TeamViewer Full Client | 15.0 ≤ v < 15.82, 15.64.0 (Legacy Windows 7 & 8) ≤ v < 15.64.8 (Legacy Windows 7 & 8), 14.7.0 ≤ v < 14.7.48855, 13.2.0 ≤ v < 13.2.36230 | 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855, 13.2.36230 |
| TeamViewer Host | 15.0 ≤ v < 15.82, 15.64.0 (Legacy Windows 7 & 8) ≤ v < 15.64.8 (Legacy Windows 7 & 8), 14.7.0 ≤ v < 14.7.48855, 13.2.0 ≤ v < 13.2.36230 | 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855, 13.2.36230 |
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