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

Description

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.

Scores

EPSS (exploitation in 30 days)

1.8% · top 22% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Weakness

• CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') (opens in a new tab)All about CWE-78 and its CVEs

Affected products

• TeamViewer · Full Client

  • affected 15.0 – < 15.81.5
  • affected 14.0 – < 14.7.488838
  • affected 13.0 – < 13.2.153978

• TeamViewer · Host

  • affected 15.0 – < 15.81.5
  • affected 14.0 – < 14.7.488838
  • affected 13.0 – < 13.2.153978

What to do

Solution: Update to the latest available client version.

References (1)

• https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1009/ (opens in a new tab)vendor-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-19042](https://trackcve.app/badge/CVE-2026-19042.svg)](https://trackcve.app/cve/CVE-2026-19042)

Record last updated 26 Aug 2026, 13:02 UTC.