Intel

CVE-2026-19042

TeamViewer: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CVE-2026-19042)

highEPSS 2.0%

Affected

  • TeamViewer/TeamViewer range_unparsed *..Full Client <15.81.5
  • TeamViewer/TeamViewer range_unparsed *..Host <15.81.5
  • TeamViewer/TeamViewer range_unparsed *..QuickSupport <15.81.5
  • TeamViewer/TeamViewer range_unparsed *..Legacy Versions

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: NVD (NIST)cvelistv5BSI CSAFBSI WID Portal

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

TeamViewerTeamViewer
Full Client <15.81.5Host <15.81.5Legacy VersionsQuickSupport <15.81.5

Metrics

XIEM Effective CVSS
8.8
Source: cna-v3
EPSS percentile
80.2 %
Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status
—
Show all metrics
Severity
high
Priority score
122.52
Exploit maturity
no public PoC known
CVSS v3
8.8
EPSS score
2.0 %
Moderate — model estimates 1-10% exploitation likelihood.
Published
2026-08-26 09:16 UTC
CWE
CWE-78

Weakness classes (CWE)

  • CWE-78Base

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

    The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

    cwe.mitre.org →

References & sources