CVE-2026-61371

Published: Jul 15, 2026Modified: Jul 15, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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”).

Related CWEs

CWE-59

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (4)

https://gist.github.com/thesmartshadow/2d099071f847de8db3dc4bbaf4dfa6df

Source: cve@mitre.org

https://github.com/microsoft/avml/pull/754

Source: cve@mitre.org

https://github.com/microsoft/avml/releases/tag/v0.17.0

Source: cve@mitre.org

https://gist.github.com/thesmartshadow/2d099071f847de8db3dc4bbaf4dfa6df

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.