Vulnerability in Microsoft Windows 10 Version 1507
CVE-2025-21391
Windows Storage Elevation of Privilege Vulnerability
EPSS: 0.047 (89.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:F/RL:O/RC:C.
Affected products
- Microsoft Windows 10 Version 1507 — versions 10.0.10240.0
- Microsoft Windows 10 Version 1607 — versions 10.0.14393.0
- Microsoft Windows 10 Version 1809 — versions 10.0.17763.0
- Microsoft Windows 10 Version 21h2 — versions 10.0.19044.0
- Microsoft Windows 10 Version 22h2 — versions 10.0.19045.0
- Microsoft Windows 11 Version 22h2 — versions 10.0.22621.0
- Microsoft Windows 11 Version 22h3 — versions 10.0.22631.0
- Microsoft Windows 11 Version 23h2 — versions 10.0.22631.0
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
- Microsoft Windows Server 2016 — versions 10.0.14393.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- Windows Storage Elevation of Privilege Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2025-21391?
- CVE-2025-21391 is a high-severity vulnerability in Microsoft Windows 10 Version 1507, classified under Improper Link Resolution Before File Access. CVSS score: 7.1/10. Published 2025-02-11.
- How severe is CVE-2025-21391?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2025-21391 known to be exploited?
- Yes. CVE-2025-21391 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-11), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.