High severity · published Aug 26, 2026
CVE-2026-19042
Command Injection in TeamViewer Desktop Client for Linux through Chat Link Handling
8.8
CVSS
1.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% 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 15.81.5; 14.0 before 14.7.488838; 13.0 before 13.2.153978 · source: vendor
HO
Host · TeamViewer
15.0 before 15.81.5; 14.0 before 14.7.488838; 13.0 before 13.2.153978 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19042
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19042
www.teamviewer.com
https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1009/
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