Vulnerability details
CVE-2025-62221
Actively exploited
Microsoft Windows 10Microsoft Windows 11Microsoft Windows Server
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVSS 3.1
7.8High
Remedy
Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2025-12-30)
Versions not listed as affected in the CVE record:
- Windows 10 Version 1809 — version 10.0.17763.8146 and later
- Windows 10 Version 21H2 — version 10.0.19044.6691 and later
- Windows 10 Version 22H2 — version 10.0.19045.6691 and later
- Windows 11 version 22H3 — version 10.0.22631.6345 and later
- Windows 11 version 23H2 — version 10.0.22631.6345 and later
- Windows 11 Version 24H2 — version 10.0.26100.7462 and later
Official description
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (microsoft) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 ≤ v < 10.0.17763.8146 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 ≤ v < 10.0.19044.6691 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 ≤ v < 10.0.19045.6691 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 ≤ v < 10.0.26100.7462 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 ≤ v < 10.0.26200.7462 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 ≤ v < 10.0.22631.6345 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 ≤ v < 10.0.22631.6345 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows Server 2019 | 10.0.17763.0 ≤ v < 10.0.17763.8146 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 ≤ v < 10.0.17763.8146 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows Server 2022 | 10.0.20348.0 ≤ v < 10.0.20348.4529 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 ≤ v < 10.0.25398.2025 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows Server 2025 | 10.0.26100.0 ≤ v < 10.0.26100.7462 | CVEProject cvelistV5 (CNA) |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 ≤ v < 10.0.26100.7462 | CVEProject cvelistV5 (CNA) |
References and advisories
2- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62221 vendor-advisorypatch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-62221 government-resource
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Details
- Published
- 2025-12-09
- Last updated
- 2026-04-16
- State
- Published
- Assigner (CNA)
- microsoft
- Kolun priority
- 83 · Critical
CISA KEV catalog
- Date added
- 2025-12-09
- Due date
- 2025-12-30
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
2.51%
Probability of exploitation in 30 days
84.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-416Use After Free