CVE-2026-61371
High
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”).
SeverityHigh
CVSS7.5
Exploit probability—
Product
AVML
PublishedJul 15, 2026
First seenJul 15, 2026
Weakness typeCWE-59Improper link resolution
How to fix
Update
- Microsoft AVML0.17.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft AVML | No range specified | 0.17.0 |
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