CVE-2026-19042Network attack vector

Remote command execution via crafted chat link

Published Aug 26, 2026 · Updated Aug 26, 2026

Command injection in TeamViewer Full Client and Host for Linux before 15.81.5 allows remote attackers to execute arbitrary commands. The out-of-session chat link handler incorporates attacker-controlled URL content into an operating-system command without adequate neutralization. Exploitation requires the user to click the link and the sender to be a contact, unless outside-contact chat is explicitly enabled; commands run as the current user.

CVSS severity8.8
High
EPSS probability2.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TeamViewer Full Client and Host for Linux before 15.81.5 allows remote attackers to execute arbitrary commands. The out-of-session chat link handler incorporates attacker-controlled URL content into an operating-system command without adequate neutralization. Exploitation requires the user to click the link and the sender to be a contact, unless outside-contact chat is explicitly enabled; commands run as the current user.

The record

CVE
CVE-2026-19042
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
TeamViewer
Product
TeamViewer Full Client
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=13.0 <13.2.153978
  2. Affected versionversion=14.0 <14.7.488838
  3. Affected versionversion=15.0 <15.81.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TeamViewer · TeamViewer Full Clientversion=13.0 <13.2.153978; version=14.0 <14.7.488838; version=15.0 <15.81.5
TeamViewer · TeamViewer Hostversion=13.0 <13.2.153978; version=14.0 <14.7.488838; version=15.0 <15.81.5

Published CVSS scores

8.8TeamViewerCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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