CVE-2026-61371

—

CVSS 3.1

7.5 high

EPSS

<1%p43

Published

Jul 15, 2026 (Jul 15, 2026)

Modified

Jul 15, 2026

Description

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”).

Weakness: CWE-59
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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