EUVD-2026-44709
GHSA-qm7h-f635-h2r6
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from Vendor (mitre) · only source for this CVE.
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
5DescriptionCVE.org
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”).
AnalysisAI
Symlink-following file overwrite in Microsoft AVML (Acquire Volatile Memory for Linux) before 0.17.0 lets a local attacker who can pre-plant a symlink at AVML's output path cause the tool to truncate and overwrite the symlink's target when it opens the file with O_TRUNC. Because the destructive open happens before input validation completes ('truncation-before-validation'), the target file is clobbered even for otherwise-invalid runs. …
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Within 24 hours, identify and inventory all systems running Microsoft AVML versions before 0.17.0, then restrict tool access until patching is complete. …
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Same weakness CWE-59 – Improper Link Resolution Before File Access
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External POC / Exploit Code
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