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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

High7.3EPSS 0.10%
Published
Updated
Reserved
Assigned by
TV

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.

Scores

CVSS scores of CVE-2026-92369, by who scored it
Scored byCVSSScoreVector
TVCNA (assigner)3.1High7.3CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVDNVD · Deferred3.1High7.3CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.10% · top 99% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.

Weakness

Affected products

  • TeamViewer · Full Client

    • affected 15.0 – < 15.82
    • affected 15.64.0 (Legacy Windows 7 & 8) – < 15.64.8 (Legacy Windows 7 & 8)
    • affected 14.7.0 – < 14.7.48855
    • affected 13.2.0 – < 13.2.36230

  • TeamViewer · Host

    • affected 15.0 – < 15.82
    • affected 15.64.0 (Legacy Windows 7 & 8) – < 15.64.8 (Legacy Windows 7 & 8)
    • affected 14.7.0 – < 14.7.48855
    • affected 13.2.0 – < 13.2.36230

What to do

Solution: Update to the latest version.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .