CVE-2026-92369
EUVD-2026-8902029.09.2026, 16:17
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.
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources
(CNA/ADP records, vendor advisories, Enginsight analysis).
| Vendor | Product | Version | Source |
|---|---|---|---|
| teamviewer | full_client | 𝑥 < 13.2.36230 | ENGINSIGHT |
| teamviewer | full_client | 13.3 ≤ 𝑥 < 14.7.48855 | ENGINSIGHT |
| teamviewer | full_client | 14.8 ≤ 𝑥 < 15.64.8 | ENGINSIGHT |
| teamviewer | full_client | 15.65 ≤ 𝑥 < 15.82 | ENGINSIGHT |
| teamviewer | host | 𝑥 < 13.2.36230 | ENGINSIGHT |
| teamviewer | host | 13.3 ≤ 𝑥 < 14.7.48855 | ENGINSIGHT |
| teamviewer | host | 14.8 ≤ 𝑥 < 15.64.8 | ENGINSIGHT |
| teamviewer | host | 15.65 ≤ 𝑥 < 15.82 | ENGINSIGHT |
| teamviewer | remote | 𝑥 < 13.2.36230 | ENGINSIGHT |
| teamviewer | remote | 13.3 ≤ 𝑥 < 14.7.48855 | ENGINSIGHT |
| teamviewer | remote | 14.8 ≤ 𝑥 < 15.64.8 | ENGINSIGHT |
| teamviewer | remote | 15.65 ≤ 𝑥 < 15.82 | ENGINSIGHT |