CVE-2026-23571Network attack vector

Elevated command execution via unvalidated instruction input

Published Jan 29, 2026 · Updated Jan 29, 2026

Command injection in TeamViewer DEX Platform through version 20 allows remote authenticated users to run elevated commands on connected hosts. The 1E-Nomad-RunPkgStatusRequest instruction accepts malicious command text in its input field without adequate validation and passes it into elevated command execution. An account with actioner privilege and user interaction are required; only connected hosts running 1E Client before 24.5 are exposed.

CVSS severity6.8
Medium
EPSS probability0.67%
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 DEX Platform through version 20 allows remote authenticated users to run elevated commands on connected hosts. The 1E-Nomad-RunPkgStatusRequest instruction accepts malicious command text in its input field without adequate validation and passes it into elevated command execution. An account with actioner privilege and user interaction are required; only connected hosts running 1E Client before 24.5 are exposed.

The record

CVE
CVE-2026-23571
Published
Jan 29, 2026
Updated
Jan 29, 2026
Vendor
TeamViewer
Product
TeamViewer DEX Platform (On-Premises)
Classifications
CWE-20, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 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=0 <=20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TeamViewer · TeamViewer DEX Platform (On-Premises)version=0 <=20

Published CVSS scores

6.8TeamViewer Germany GmbHCVSS:3.1/AV:N/AC:L/PR:H/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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