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CVE-2025-21391

CISA KEV

Published February 11, 2025 · Updated April 3, 2026

high
Official Description+

Microsoft Windows Storage contains a link following vulnerability that could allow for privilege escalation. This vulnerability could allow an attacker to delete data including data that results in the service being unavailable.

Affected Products

VendorProduct
MicrosoftWindows

Patch Status

Patch by 2025-03-04

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2025-21391.