What’s Vulnerable › Vulnerabilities

CVE-2026-61371

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-15 · updated 2026-07-15
• Weakness: CWE-59

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”).

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

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