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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

Quick assessment

Affected
TeamViewer Full Client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 a

CVSS 7.3 · High
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I. Basic Information for CVE-2026-92369

Vulnerability Information

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Vulnerability Title
Time-of-check Time-of-use (TOCTOU) Race Condition in TeamViewer Windows Installer Rollback Mechanism Leads to Local Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TeamViewer Full Client 15.0 ~ 15.82 -
TeamViewer Host 15.0 ~ 15.82 -

II. Public POCs for CVE-2026-92369

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III. Intelligence Information for CVE-2026-92369

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Other References for CVE-2026-92369 (1)

Same Patch Batch · TeamViewer · 2026-09-29 · 5 CVEs total

CVE-2026-92370 8.8 HIGH Remote Session Access Control Bypass Leading to Remote Code Execution
CVE-2026-19743 7.8 HIGH Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer
CVE-2026-92368 7.8 HIGH Heap-Based Buffer Overflow in TeamViewer Session Recording Playback Leads to Remote Code E
CVE-2026-92371 7.0 HIGH Local Privilege Escalation via Improper Link Resolution in Cloud Session Recording

IV. Related Vulnerabilities

Same product: Full Client
Same vendor: TeamViewer
Same weakness: CWE-367

V. Comments for CVE-2026-92369

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