CVE-2026-19042
HighA 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.
Published Aug 26, 2026 · Updated Sep 1, 2026 · Also known as EUVD-2026-66381, GHSA-hv9x-3jwv-hvm4, TR-26-0920
Key Facts
Patch in the next maintenance window- CVE-2026-19042 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Full Client, Host.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 2.0% probability of exploitation in the next 30 days.
- Fixed versions are available, including Full Client 13.2.153978, Full Client 14.7.488838, Full Client 15.81.5.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
2.0%
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2026-19042 brief as a PDF
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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.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Full Client | >= 13.0, >= 15.0 | 13.2.153978 |
| Host | >= 14.0, >= 15.0 | 14.7.488838 |
Patched Releases
Full Client
13.2.153978, 14.7.488838, 15.81.5
Host
13.2.153978, 14.7.488838, 15.81.5
Timeline
Publicly disclosed
Aug 26, 2026
Last updated
Sep 1, 2026
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
FAQ
Common Questions.
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.
Affected: Full Client versions >= 13.0, >= 15.0; Host versions >= 14.0, >= 15.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Full Client 13.2.153978, Full Client 14.7.488838, Full Client 15.81.5.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
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