KEV · Actively exploited
CVE-2025-21391
CVE-2025-21391 is actively exploited (CISA KEV catalog) : high severity (CVSS 7.1), 0 tracked apps concerned, none still exposed on their current version.
- Severity (CVSS)
- 7.1
- Exploitation
- Confirmed
- Tracked apps
- 0
- Still exposed
- 0
NVD scale
CISA KEV · EPSS predicts 2.3 %
Windows Storage Elevation of Privilege Vulnerability
Attack vector : Local
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS
2.30%
predictive model; CISA confirms active exploitation
percentile 82.6%
CISA Known Exploited Vulnerability
- Added to KEV
- 2025-02-11
- Remediation deadline
- 2025-03-04
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Ransomware
- Unknown (not documented by CISA)
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows Server 2025 Fixed in 10.0.26100.3194
- Windows Server 2022 (Server Core installation) Fixed in 10.0.20348.3207
- Windows Server 2022 Fixed in 10.0.25398.1425
- Windows Server 2019 Fixed in 10.0.17763.6893
- Windows Server 2016 Fixed in 10.0.14393.7785
- Windows 11 24H2 · 2024-H2 Fixed in 10.0.26100.3194
- Windows 11 23H2 · 2023-H2 Fixed in 10.0.22631.4890
- Windows 11 22H2 · 2022-H2 Fixed in 10.0.22621.4890
- Windows 10 22H2 · 2022-H2 Fixed in 10.0.19045.5487
- Windows 10 21H2 · 2021-H2 Fixed in 10.0.19044.5487
- Windows 10 1809 · 2018-09 Fixed in 10.0.17763.6893
- Windows 10 1607 · 2016-07 Fixed in 10.0.14393.7785
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