What is CVE-2026-23563?

CVE-2026-23563 is a medium-severity vulnerability in Microsoft Windows, classified under Improper Link Resolution Before File Access. CVSS score: 5.7/10. Published 2026-01-29.

How severe is CVE-2026-23563?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Microsoft Windows

CVE-2026-23563

Improper Link Resolution Before File Access (invoked by 1E‑Explorer‑TachyonCore‑DeleteFileByPath instruction) in TeamViewer DEX - 1E Client before version 26.1 on Windows allows a low‑privileged local attacker to delete protected system fi…

EPSS: 0.002 (9.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H.

Affected products

Microsoft Windows
Teamviewer Dex — versions 0
Teamviewer Digital_employee_experience

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

psirt@teamviewer.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-23563?: CVE-2026-23563 is a medium-severity vulnerability in Microsoft Windows, classified under Improper Link Resolution Before File Access. CVSS score: 5.7/10. Published 2026-01-29.
How severe is CVE-2026-23563?: Medium severity. CVSS v3 base score is 5.7 out of 10.