TeamViewer Full Client/Host up to 13.2.153977/14.7.488837/15.81.4 Out-of-Session Chat Feature command injection

Summaryinfo

A vulnerability was found in TeamViewer Full Client and Host up to 13.2.153977/14.7.488837/15.81.4. It has been classified as critical. This issue affects some unknown processing of the component Out-of-Session Chat Feature. The manipulation leads to command injection. This vulnerability is traded as CVE-2026-19042. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in TeamViewer Full Client and Host up to 13.2.153977/14.7.488837/15.81.4. It has been rated as critical. This issue affects an unknown code block of the component Out-of-Session Chat Feature. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at teamviewer.com. The identification of this vulnerability is CVE-2026-19042 since 08/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 13.2.153978, 14.7.488838 or 15.81.5 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• TeamViewer

Name

• Full Client
• Host

Version

• 13.2.153977
• 14.7.488837
• 15.81.0
• 15.81.1
• 15.81.2
• 15.81.3
• 15.81.4

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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