All vulnerabilities
CVE-2025-21391

Microsoft Windows Storage Link Following Vulnerability

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
7.1High
ExploitationExploited in the wildAdded to KEV 11 Feb 2025CISA KEV
Exploit odds (EPSS)2.28%Chance of exploitation activity in the next 30 days, higher than 83% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.0.10240.20915Also 10.0.14393.7785, 10.0.17763.6893 and 7 moreCVE List
Federal deadline4 Mar 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 10.0.10240.20915Windows 10 Version 1507CVE List
  • 10.0.14393.7785Windows 10 Version 1607CVE List
  • 10.0.17763.6893Windows 10 Version 1809CVE List
  • 10.0.19044.5487Windows 10 Version 21H2CVE List
  • 10.0.19045.5487Windows 10 Version 22H2CVE List
  • 10.0.22621.4890Windows 11 version 22H2CVE List
Show all 17 fixed versions
  • 10.0.22631.4890Windows 11 version 22H3CVE List
  • 10.0.22631.4890Windows 11 Version 23H2CVE List
  • 10.0.26100.3194Windows 11 Version 24H2CVE List
  • 10.0.14393.7785Windows Server 2016CVE List
  • 10.0.14393.7785Windows Server 2016 (Server Core installation)CVE List
  • 10.0.17763.6893Windows Server 2019CVE List
  • 10.0.17763.6893Windows Server 2019 (Server Core installation)CVE List
  • 10.0.20348.3207Windows Server 2022CVE List
  • 10.0.25398.1425Windows Server 2022, 23H2 Edition (Server Core installation)CVE List
  • 10.0.26100.3194Windows Server 2025CVE List
  • 10.0.26100.3194Windows Server 2025 (Server Core installation)CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 11 Feb 2025Added to CISA KEVCISA KEV
  2. 11 Feb 2025, 17:58 UTCPublishedCVE List

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.

Text from CVE List

Affected versions 17

  • Windows 10 Version 1507affected: 10.0.10240.0 before 10.0.10240.20915CVE List
  • Windows 10 Version 1607affected: 10.0.14393.0 before 10.0.14393.7785CVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before 10.0.17763.6893CVE List
  • Windows 10 Version 21H2affected: 10.0.19044.0 before 10.0.19044.5487CVE List
  • Windows 10 Version 22H2affected: 10.0.19045.0 before 10.0.19045.5487CVE List
  • Windows 11 version 22H2affected: 10.0.22621.0 before 10.0.22621.4890CVE List
  • Windows 11 version 22H3affected: 10.0.22631.0 before 10.0.22631.4890CVE List
  • Windows 11 Version 23H2affected: 10.0.22631.0 before 10.0.22631.4890CVE List
  • Windows 11 Version 24H2affected: 10.0.26100.0 before 10.0.26100.3194CVE List
  • Windows Server 2016affected: 10.0.14393.0 before 10.0.14393.7785CVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before 10.0.14393.7785CVE List
  • Windows Server 2019affected: 10.0.17763.0 before 10.0.17763.6893CVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before 10.0.17763.6893CVE List
  • Windows Server 2022affected: 10.0.20348.0 before 10.0.20348.3207CVE List
  • Windows Server 2022, 23H2 Edition (Server Core installation)affected: 10.0.25398.0 before 10.0.25398.1425CVE List
  • Windows Server 2025affected: 10.0.26100.0 before 10.0.26100.3194CVE List
  • Windows Server 2025 (Server Core installation)affected: 10.0.26100.0 before 10.0.26100.3194CVE List

References 3