CVE Catalog

CVE-2026-61371

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.36%

28th percentile - higher than 28% of all known CVEs

Summary

A vulnerability in Microsoft AVML before version 0.17.0 allows following a symlink when opening a destination output path on Unix, enabling truncation or overwrite of the symlink target. The destructive effect occurs at open time via O_TRUNC, before full input validation completes (truncation-before-validation).

Risk Assessment

An attacker could exploit this vulnerability to destroy or overwrite arbitrary files accessible to the AVML process, potentially leading to data loss or system integrity compromise.

Recommendation

Immediately update Microsoft AVML to version 0.17.0 or later, which includes a fix that prevents following symbolic links.

Related vulnerabilities

Original NVD description (English source)

Microsoft AVML before 0.17.0 could follow a symlink when opening a destination output path on Unix, allowing truncation/overwrite of the symlink target. The destructive effect is performed at open-time via O_TRUNC, and can happen before full input validation completes (“truncation-before-validation”).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS