Vulnerability 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”).
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://gist.github.com/thesmartshadow/2d099071f847de8db3dc4bbaf4dfa6df
- https://github.com/microsoft/avml/pull/754
- https://github.com/microsoft/avml/releases/tag/v0.17.0
- https://gist.github.com/thesmartshadow/2d099071f847de8db3dc4bbaf4dfa6df
FAQ
What is CVE-2026-61371?
CVE-2026-61371 is a vulnerability with a CVSS score of 7.5 (HIGH). 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-tim...
How severe is CVE-2026-61371?
CVE-2026-61371 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-61371?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.