Time-of-check Time-of-use (TOCTOU) Race Condition in TeamViewer Remote Host for Windows and TeamViewer Remote Full Client for Windows - CVE-2025-44002
Published: August 27, 2025 / Updated: August 30, 2025
Vulnerability identifier: #VU114446
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-44002
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: TeamViewer
Affected software:
TeamViewer Remote Host for Windows
TeamViewer Remote Full Client for Windows
TeamViewer Remote Host for Windows
TeamViewer Remote Full Client for Windows
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a time-of-check, time-of-use (TOCTOU) race condition in the Directory Validation Logic. A local user can create arbitrary files with SYSTEM privileges and cause a denial of service condition on the target system.
How to mitigate CVE-2025-44002
Install updates from vendor's website.