Windows
CVE-2025-21391
HIGH
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
Windows Storage Elevation of Privilege Vulnerability
AnalysisAI
Windows Storage contains an elevation of privilege vulnerability through symlink following that allows authorized attackers to delete targeted files, enabling privilege escalation.
Technical ContextAI
The CWE-59 improper link resolution allows a local attacker to create symbolic links that redirect Windows Storage operations to delete files in privileged locations. By targeting specific system files, the attacker can create conditions for privilege escalation.
RemediationAI
Apply Microsoft security update. Monitor for suspicious symlink creation in user-writable directories.
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Same weakness CWE-59 – Improper Link Resolution Before File Access
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today