High severity · published Sep 29, 2026
CVE-2026-19743
Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer Desktop Clients
7.8
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FC
Full Client · TeamViewer
15.0 before 15.82; 15.64.0 (Legacy Windows 7 & 8) before 15.64.8 (Legacy Windows 7 & 8); 14.7.0 (Windows) before 14.7.48855 (Windows); 13.2.0 (Windows) before 13.2.36230 (Windows); 14.7.0 (Linux) before 14.7.48855 (Linux); 13.2.0 (Linux) before 13.2.153995 (Linux); +2 more · source: vendor
HO
Host · TeamViewer
15.0 before 15.82; 15.64.0 (Legacy Windows 7 & 8) before 15.64.8 (Legacy Windows 7 & 8); 14.7.0 (Windows) before 14.7.48855 (Windows); 13.2.0 (Windows) before 13.2.36230 (Windows); 14.7.0 (Linux) before 14.7.48855 (Linux); 13.2.0 (Linux) before 13.2.153995 (Linux); +2 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19743
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19743
vendor-advisory
https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/
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