CVE-2026-16444

Improper Validation of File Paths in TeamViewer Desktop Clients

Published Aug 26, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update to the last available client version.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Teamviewer
Teamviewer full Client
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)
Teamviewer host
Vendors & Products Teamviewer
Teamviewer full Client
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)
Teamviewer host
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Improper Validation of File Paths in TeamViewer Desktop Clients
Weaknesses CWE-73
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}