CVE-2025-62221

Name: CVE-2025-62221
Creator: NVD / NIST
Published: 2025-12-09T18:15:56.517+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10Actively ExploitedEPSS 2.34%

Last modified Jun 17, 2026

CVE-2025-62221 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.. CISA has confirmed active exploitation in the wild. EPSS estimates a 2.34% chance of exploitation in the next 30 days.

Description

Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.34%

81.5th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Dec 30, 2025.

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10 1809	< 10.0.17763.8146
Microsoft	Windows 10 21h2	< 10.0.19044.6691
Microsoft	Windows 10 22h2	< 10.0.19045.6691
Microsoft	Windows 11 23h2	< 10.0.22631.6345
Microsoft	Windows 11 24h2	< 10.0.26100.7392
Microsoft	Windows 11 25h2	< 10.0.26200.7392
Microsoft	Windows Server 2019	< 10.0.17763.8146
Microsoft	Windows Server 2022	< 10.0.20348.4467
Microsoft	Windows Server 2022 23h2	< 10.0.25398.2025
Microsoft	Windows Server 2025	< 10.0.26100.7392

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62221Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-62221US Government Resource

Timeline

Published: Dec 9, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-62221?

Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

How severe is CVE-2025-62221?

CVE-2025-62221 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.34% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-62221?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-62221?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST