CVE-2026-19743
High
Description
Improper path validation in the local IPC service of TeamViewer Full Client and Host on Windows, Linux, and macOS prior to version 15.82 allows a local authenticated user with low privileges to perform arbitrary file writes with elevated privileges (NT AUTHORITY/SYSTEM \ root). By sending crafted IPC commands to the local service daemon, an attacker could manipulate file paths, leading to local privilege escalation.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Full Client
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- TeamViewer Full Client15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS) or later
- TeamViewer Host15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS) or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| TeamViewer Full Client | 15.0 ≤ v < 15.82, 15.64.0 (Legacy Windows 7 & 8) ≤ v < 15.64.8 (Legacy Windows 7 & 8), 14.7.0 (Windows) ≤ v < 14.7.48855 (Windows), 13.2.0 (Windows) ≤ v < 13.2.36230 (Windows), 14.7.0 (Linux) ≤ v < 14.7.48855 (Linux), 13.2.0 (Linux) ≤ v < 13.2.153995 (Linux), 14.7.0 (MacOS) ≤ v < 14.7.48855 (MacOS), 13.2.0 (MacOS) ≤ v < 13.2.153994 (MacOS) | 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS) |
| TeamViewer Host | 15.0 ≤ v < 15.82, 15.64.0 (Legacy Windows 7 & 8) ≤ v < 15.64.8 (Legacy Windows 7 & 8), 14.7.0 (Windows) ≤ v < 14.7.48855 (Windows), 13.2.0 (Windows) ≤ v < 13.2.36230 (Windows), 14.7.0 (Linux) ≤ v < 14.7.48855 (Linux), 13.2.0 (Linux) ≤ v < 13.2.153995 (Linux), 14.7.0 (MacOS) ≤ v < 14.7.48855 (MacOS), 13.2.0 (MacOS) ≤ v < 13.2.153994 (MacOS) | 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS) |
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