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CVE-2026-19042— Command Injection in TeamViewer Desktop Client for Linux through Chat Link Handling

Quick assessment

Affected
TeamViewer Full Client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 版的 TeamViewer 完整客户端和主机版本（低于 15.81.5 版本）中，存在一个命令注入漏洞。攻击者可以通过发送一个经过精心构造的 URL，利用会话外聊天功能，在当前用户权限上下文中执行任意命令。漏洞的利用需要用户交互，即用户需要点击恶意链接。

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1204 · User Execution

Affected Version Matrix 6

VendorProduct Version RangeStatus
TeamViewer Full Client 15.0< 15.81.5 affected
14.0< 14.7.488838 affected
13.0< 13.2.153978 affected
TeamViewer Host 15.0< 15.81.5 affected
14.0< 14.7.488838 affected
13.0< 13.2.153978 affected
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I. Basic Information for CVE-2026-19042

Vulnerability Information
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Vulnerability Title
Command Injection in TeamViewer Desktop Client for Linux through Chat Link Handling
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TeamViewer Full Client 15.0 ~ 15.81.5 -
TeamViewer Host 15.0 ~ 15.81.5 -

II. Public POCs for CVE-2026-19042

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III. Intelligence Information for CVE-2026-19042

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Other References for CVE-2026-19042 (1)

IV. Related Vulnerabilities

Same product: Full Client
Same vendor: TeamViewer
Same weakness: CWE-78

V. Comments for CVE-2026-19042

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