⚠ Actively exploited
Added to CISA KEV on 2025-02-11. Federal agencies required to patch by 2025-03-04. Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable..

CVE-2025-21391 — Link Following in Microsoft Windows 10 Version 1507

CWE-59 — Link Following15 documents12 sources
Severity
7.1HIGHNVD
EPSS
5.4%
top 9.81%
CISA KEV
KEV
Added 2025-02-11
Due 2025-03-04
Exploit
No known exploits
Affected products
22
Microsoft Windows 10 Version 1507Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809+19 more
Timeline
PublishedFeb 11
KEV addedFeb 11
Latest updateFeb 12
KEV dueMar 4
CISA Required Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

Windows Storage Elevation of Privilege Vulnerability

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HExploitability: 1.8 | Impact: 5.2

Affected Packages22 packages

▶NVDmicrosoft/windows< 10.0.14393.7785+4
▶NVDmicrosoft/windows_10_1507< 10.0.10240.20915
▶NVDmicrosoft/windows_10_1607< 10.0.14393.7785
▶NVDmicrosoft/windows_10_1809< 10.0.17763.6893
▶NVDmicrosoft/windows_10_21h2< 10.0.19044.5487

Patches

Patch: msrc.microsoft.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-hq9p-wcjc-wqxg: Windows Storage Elevation of Privilege Vulnerability↗2025-02-11
▶
CVEList
Windows Storage Elevation of Privilege Vulnerability↗2025-02-11
▶
VulnCheck
Microsoft Windows Storage Link Following Vulnerability↗2025
▶

📋Vendor Advisories

2
CISA
Microsoft Windows Storage Link Following Vulnerability↗2025-02-11
▶
Microsoft
Windows Storage Elevation of Privilege Vulnerability↗2025-02-11
▶

🕵️Threat Intelligence

9
Krebs
Microsoft Patch Tuesday, February 2025 Edition↗2025-02-12
▶
Krebs
Microsoft Patch Tuesday, February 2025 Edition↗2025-02-12
▶
Talos
Microsoft Patch Tuesday for February 2025 — Snort rules and prominent vulnerabilities↗2025-02-11
▶
Talos
Microsoft Patch Tuesday for February 2025 — Snort rules and prominent vulnerabilities↗2025-02-11
▶
Qualys
Microsoft and Adobe Patch Tuesday, February 2025 Security Update Review↗2025-02-11
▶
CVE-2025-21391 — Link Following in Microsoft | cvebase