What is CVE-2026-23571?

CVE-2026-23571 is a medium-severity vulnerability in Microsoft Windows, classified under Improper Input Validation. CVSS score: 6.8/10. Published 2026-01-29.

How severe is CVE-2026-23571?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Improper input validation in Microsoft Windows

CVE-2026-23571

A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Nomad-RunPkgStatusRequest instruction. Improper input validation allows authenticated attackers with actioner privilege to run e…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.007 (46.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows
Teamviewer Dex — versions 0
Teamviewer Digital_employee_experience

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@teamviewer.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-23571?: CVE-2026-23571 is a medium-severity vulnerability in Microsoft Windows, classified under Improper Input Validation. CVSS score: 6.8/10. Published 2026-01-29.
How severe is CVE-2026-23571?: Medium severity. CVSS v3 base score is 6.8 out of 10.