CVE-2026-16444: TeamViewer Full Client, Host, Quicksupport & Portable

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• TeamViewer Full Client, Host, Quicksupport & Portable: from 15.0, before 15.81.5 (fixed in 15.81.5)
• TeamViewer Full Client, Host, Quicksupport & Portable For Windows 7 & 8: from 15.64.0, before 15.64.7 (fixed in 15.64.7)
• TeamViewer Full Client, Host, Quicksupport & Portable v13 For Windows: from 13.0, before 13.2.36229 (fixed in 13.2.36229)
• TeamViewer Full Client, Host, Quicksupport v13 For Linux: from 13.0, before 13.2.153978 (fixed in 13.2.153978)
• TeamViewer Full Client, Host, Quicksupport v13 For macOS: from 13.0, before 13.2.153981 (fixed in 13.2.153981)
• TeamViewer Full Client, Host, Quicksupport v14 For Linux: from 14.0, before 14.7.48838 (fixed in 14.7.48838)
• TeamViewer Full Client, Host, Quicksupport v14 For macOS: from 14.0, before 14.7.48838 (fixed in 14.7.48838)
• TeamViewer Full Client, Host, Quicksupport v14 For Windows: from 14.0, before 14.7.48833 (fixed in 14.7.48833)

Published 2026-08-26. Last modified 2026-09-01.