CVE-2025-21343: high-severity vulnerability in Microsoft Windows 11 version 22H2
Windows Web Threat Defense User Service Information Disclosure Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.4%
Windows Web Threat Defense User Service Information Disclosure Vulnerability
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Affected products
Microsoft · Windows 11 version 22H2Microsoft · Windows 11 version 22H3Microsoft · Windows 11 Version 23H2Microsoft · Windows 11 Version 24H2Related CVEs — Microsoft Windows 11 version 22H2
In the same product, most dangerous first.
CVE-2021-34527HIGHWindows Print Spooler Remote Code Execution VulnerabilityEPSS 99.8%KEVCVE-2023-36884HIGHWindows Search Remote Code Execution VulnerabilityEPSS 99.4%KEVCVE-2024-21412HIGHInternet Shortcut Files Security Feature Bypass VulnerabilityEPSS 99.4%KEVCVE-2023-36025HIGHWindows SmartScreen Security Feature Bypass VulnerabilityEPSS 88.2%KEVCVE-2025-33053HIGHInternet Shortcut Files Remote Code Execution VulnerabilityEPSS 87.0%KEVCVE-2024-43451MEDIUMNTLM Hash Disclosure Spoofing VulnerabilityEPSS 84.3%KEV