VULNERABILITY INTELLIGENCE
CVE-2026-61371
CVSS score7.5 HIGH
EPSS probability0.53%
CISA KEVNot currently listed
Published2026-07-15
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 classification
- CWE-59: Improper Link Resolution Before File Access ('Link Following')