Privilege escalation in Microsoft Windows_11_22h2
CVE-2025-21343
Windows Web Threat Defense User Service Information Disclosure Vulnerability
Vulnerability class: Privilege Escalation
EPSS: 0.013 (66.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- 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
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-21343?
- CVE-2025-21343 is a high-severity vulnerability in Microsoft Windows_11_22h2, classified under Improper Privilege Management. CVSS score: 7.5/10. Published 2025-01-14.
- How severe is CVE-2025-21343?
- High severity. CVSS v3 base score is 7.5 out of 10.