CVE-2026-19042 PUBLISHED

Command Injection in TeamViewer Desktop Client for Linux through Chat Link Handling

Assigner: TV
Reserved: 06.08.2026 Published: 26.08.2026 Updated: 26.08.2026

A command injection vulnerability in TeamViewer Full Client and Host for Linux prior to version 15.81.5 allows a remote attacker to execute arbitrary commands in the context of the current user via a specially crafted URL sent through the out-of-session chat feature. Exploitation requires user interaction by clicking the malicious link.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Product Status

Vendor TeamViewer
Product Full Client
Versions Default: unaffected
  • affected from 15.0 to 15.81.5 (excl.)
  • affected from 14.0 to 14.7.488838 (excl.)
  • affected from 13.0 to 13.2.153978 (excl.)
Vendor TeamViewer
Product Host
Versions Default: unaffected
  • affected from 15.0 to 15.81.5 (excl.)
  • affected from 14.0 to 14.7.488838 (excl.)
  • affected from 13.0 to 13.2.153978 (excl.)

Solutions

Update to the latest available client version.

Credits

  • HeaZzy (Mathys KHALFA) & skav (Antoine RIEUL) finder

References

Problem Types

  • CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') CWE