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CVE-2026-19042 is an OS command injection vulnerability in TeamViewer Full Client and TeamViewer Host for Linux before version 15.81.5. Improper handling of a specially crafted URL delivered through the out-of-session chat feature allows attacker-controlled commands to be executed after the recipient activates the link.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A command-injection vulnerability in TeamViewer Full Client and Host for Linux before version 15.81.5. A remote attacker can execute arbitrary commands as the current user by sending a specially crafted URL through out-of-session chat, provided the user clicks it.
A high-severity command-injection vulnerability in TeamViewer Full Client and TeamViewer Host for Linux. A malicious chat URL can cause arbitrary commands to execute as the victim after they click it.
A high-severity OS command-injection vulnerability in TeamViewer Full Client and Host for Linux that can enable remote code execution as the current user when a victim clicks a crafted URL delivered through out-of-session chat.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.