Junglewise Threat Intelligence

CVE-2025-21391: Microsoft Windows Storage Link Following Vulnerability

CVE-2025-21391 · Severity: critical · CVSS 7.1 · Exploited in the wild · Published 2025-02-11

Technologies: Microsoft Windows, Microsoft Windows 11, Microsoft Windows Server, Microsoft Windows 10. Vendors: Microsoft.

Executive brief

Microsoft Windows Storage contains a link following vulnerability (CWE-59) that allows for elevation of privilege. An attacker exploiting this flaw could delete sensitive data, potentially leading to service unavailability or unauthorized system access.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
  • Microsoft Windows 11 22H2, 23H2, 24H2
  • Microsoft Windows Server 2016, 2019, 2022, 2025, 23H2

Timeline

  • 2025-02-11: disclosed
  • 2025-02-11: patched
  • 2025-02-11: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2025-02-11: exploited: Reported as exploited in the wild at time of publication.

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