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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-19042
StatePUBLISHED
AssignerTV
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 10:16:40 UTC
Updated2026-09-01 20:50:58 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

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

EPSS: 0.020040000 probability, percentile 0.794350000 (date 2026-09-03)

Problem Types: CWE-78 | CWE-78 CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TeamViewer Full Client affected 15.0 15.81.5 custom Linux
CNA TeamViewer Full Client affected 14.0 14.7.488838 custom Linux
CNA TeamViewer Full Client affected 13.0 13.2.153978 custom Linux
CNA TeamViewer Host affected 15.0 15.81.5 custom Linux
CNA TeamViewer Host affected 14.0 14.7.488838 custom Linux
CNA TeamViewer Host affected 13.0 13.2.153978 custom Linux

References

ReferenceSourceLinkTags
www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1009 [email protected] www.teamviewer.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: HeaZzy (Mathys KHALFA) & skav (Antoine RIEUL) (en)

Additional Advisory Data

Solutions

CNA: Update to the latest available client version.

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