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CVE-2026-92369

Time-of-check Time-of-use (TOCTOU) Race Condition in TeamViewer Windows Installer Rollback Mechanism Leads to Local Privilege Escalation PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
TeamViewer / Full Clientaffected 15.0 before 15.82; affected 15.64.0 (Legacy Windows 7 & 8) before 15.64.8 (Legacy Windows 7 & 8); affected 14.7.0 before 14.7.48855; affected 13.2.0 before 13.2.36230
TeamViewer / Hostaffected 15.0 before 15.82; affected 15.64.0 (Legacy Windows 7 & 8) before 15.64.8 (Legacy Windows 7 & 8); affected 14.7.0 before 14.7.48855; affected 13.2.0 before 13.2.36230

CWE

CWE-367

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.