February 11, 2025 · Applied Cybernetics Group
CVE-2025-21391 — Microsoft Windows
Microsoft Windows Storage Link Following Vulnerability
- Added to KEV
2025-02-11- Federal due date
2025-03-04- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 89.6th percentile (score 0.047, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-21391
CISA short 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.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.