CVE-2026-92369Time-of-check Time-of-use (TOCTOU) Race Condition in TeamViewer Windows Installer Rollback Mechanism Leads to Local Privilege Escalation
Updated under an hour ago ()
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It affects TeamViewer Full Client and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.09%, higher than 0% of scored CVEs.
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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.
- CVSS
- 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-367
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.09% (percentile 0)
- Assigned by
- TV
- NVD analysis
- Deferred
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
TeamViewer Full Client teamviewer:full_client (from the name) | from 15.0 before 15.82; from 15.64.0 (Legacy Windows 7 & 8) before 15.64.8 (Legacy Windows 7 & 8); from 14.7.0 before 14.7.48855; from 13.2.0 before 13.2.36230 | CNA record |
TeamViewer Host teamviewer:host (from the name) | from 15.0 before 15.82; from 15.64.0 (Legacy Windows 7 & 8) before 15.64.8 (Legacy Windows 7 & 8); from 14.7.0 before 14.7.48855; from 13.2.0 before 13.2.36230 | CNA record |
References
- https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.