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Fencer Intel
high 7.8

CVE-2026-19743 json

Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer Desktop Clients

published last mo. modified last mo. also EUVD-2026-89019

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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.

Patch / fix

  • TeamViewer Full Client 13.2.36230 (Windows), 13.2.153994 (MacOS), 13.2.153995 (Linux), 14.7.48855 (Linux), 14.7.48855 (MacOS), 14.7.48855 (Windows), 15.64.8 (Legacy Windows 7 & 8), 15.82
  • TeamViewer Host 13.2.36230 (Windows), 13.2.153994 (MacOS), 13.2.153995 (Linux), 14.7.48855 (Linux), 14.7.48855 (MacOS), 14.7.48855 (Windows), 15.64.8 (Legacy Windows 7 & 8), 15.82

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last mo.

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • TeamViewer Full Client
  • TeamViewer Host

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.