Vulnerability in Teamviewer Full Client, Host, Quicksupport & Portable
CVE-2026-16444
Improper neutralization of path traversal sequences in TeamViewer Desktop Clients prior Version 15.81.5 allows an authenticated remote session participant to write files to unintended locations on the local file system via file transfer or virtual file clipboard mechanisms. An attacker can leverage this behavior to achieve arbitrary file write and potentially execute code with the privileges of the affected user.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Teamviewer Full Client, Host, Quicksupport & Portable
- Teamviewer Full Client, Host, Quicksupport & Portable (For Windows 7 8)
- Teamviewer Full Client, Host, Quicksupport & Portable (V13 For Windows)
- Teamviewer Full Client, Host, Quicksupport (V13 For Linux)
- Teamviewer Full Client, Host, Quicksupport (V13 For Macos)
- Teamviewer Full Client, Host, Quicksupport (V14 For Linux)
- Teamviewer Full Client, Host, Quicksupport (V14 For Macos)
- Teamviewer Full Client, Host, Quicksupport (V14 For Windows)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-16444?
- CVE-2026-16444 is a high-severity vulnerability in Teamviewer Full Client, Host, Quicksupport & Portable, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2026-08-26.
- How severe is CVE-2026-16444?
- High severity. CVSS v3 base score is 7.5 out of 10.