CVE-2026-16444
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Full Client, Host, QuickSupport & Portable
PublishedAug 26, 2026
First seenAug 26, 2026
Weakness typeCWE-73CWE-73
How to fix
Update
- TeamViewer Full Client, Host, QuickSupport & Portable15.81.5 or later
- TeamViewer Full Client, Host, QuickSupport & Portable (for Windows 7 & 8)15.64.7 or later
- TeamViewer Full Client, Host, QuickSupport (v14 for Windows)14.7.48833 or later
- TeamViewer Full Client, Host, QuickSupport (v14 for Linux)14.7.48838 or later
- TeamViewer Full Client, Host, QuickSupport (v14 for macOS)14.7.48838 or later
- TeamViewer Full Client, Host, QuickSupport & Portable (v13 for Windows)13.2.36229 or later
- TeamViewer Full Client, Host, QuickSupport (v13 for Linux)13.2.153978 or later
- TeamViewer Full Client, Host, QuickSupport (v13 for macOS)13.2.153981 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| TeamViewer Full Client, Host, QuickSupport & Portable | 15.0 ≤ v < 15.81.5 | 15.81.5 |
| TeamViewer Full Client, Host, QuickSupport & Portable (for Windows 7 & 8) | 15.64.0 ≤ v < 15.64.7 | 15.64.7 |
| TeamViewer Full Client, Host, QuickSupport (v14 for Windows) | 14.0 ≤ v < 14.7.48833 | 14.7.48833 |
| TeamViewer Full Client, Host, QuickSupport (v14 for Linux) | 14.0 ≤ v < 14.7.48838 | 14.7.48838 |
| TeamViewer Full Client, Host, QuickSupport (v14 for macOS) | 14.0 ≤ v < 14.7.48838 | 14.7.48838 |
| TeamViewer Full Client, Host, QuickSupport & Portable (v13 for Windows) | 13.0 ≤ v < 13.2.36229 | 13.2.36229 |
| TeamViewer Full Client, Host, QuickSupport (v13 for Linux) | 13.0 ≤ v < 13.2.153978 | 13.2.153978 |
| TeamViewer Full Client, Host, QuickSupport (v13 for macOS) | 13.0 ≤ v < 13.2.153981 | 13.2.153981 |
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