CVE-2026-16444
Improper Validation of File Paths in TeamViewer Desktop Clients
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 26, 2026
- Updated
- Aug 27, 2026
- Reserved
- Jul 21, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | TV |
Weaknesses
- CWE-73 External control of file name or path
Affected Products
| Product | Versions |
|---|---|
Full Client, Host, QuickSupport & PortableTeamViewer |
|
Full Client, Host, QuickSupport & Portable (for Windows 7 & 8)TeamViewer |
|
Full Client, Host, QuickSupport (v14 for Windows)TeamViewer |
|
Full Client, Host, QuickSupport (v14 for Linux)TeamViewer |
|
Full Client, Host, QuickSupport (v14 for macOS)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 |
|
References
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