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
- 83.2th percentile (score 0.023, as of
2026-11-06) - NVD CVSS v3.1
- 7.1 (HIGH)
- Ransomware use
- Unknown
- ATT&CK
- T1068 , T1485 , T1490 · signal rollup
- 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.
NVD description
Windows Storage Elevation of Privilege Vulnerability