Use After Free in Microsoft Windows_10_21h2
CVE-2025-27729
Use after free in Windows Shell allows an unauthorized attacker to execute code locally.
Vulnerability class: Use-After-Free
EPSS: 0.007 (49.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows_10_21h2
- Microsoft Windows_10_22h2
- Microsoft Windows 10 Version 21h2 — versions 10.0.19044.0
- Microsoft Windows 10 Version 22h2 — versions 10.0.19045.0
- Microsoft Windows_11_22h2
- Microsoft Windows_11_23h2
- Microsoft Windows_11_24h2
- Microsoft Windows 11 Version 22h2 — versions 10.0.22621.0
- Microsoft Windows 11 Version 22h3 — versions 10.0.22631.0
- Microsoft Windows 11 Version 23h2 — versions 10.0.22631.0
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-27729?
- CVE-2025-27729 is a high-severity vulnerability in Microsoft Windows_10_21h2, classified under Use After Free. CVSS score: 7.8/10. Published 2025-04-08.
- How severe is CVE-2025-27729?
- High severity. CVSS v3 base score is 7.8 out of 10.