CVE-2025-21343

EUVD-2025-2408
Windows Web Threat Defense User Service Information Disclosure Vulnerability
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
microsoftCNA
7.5 HIGH
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 87%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_11_22h2
𝑥
< 10.0.22621.4751
microsoftwindows_11_23h2
𝑥
< 10.0.22631.4751
microsoftwindows_11_24h2
𝑥
< 10.0.26100.2894
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 11
22H2 (arm64, x64)
KB5050021
23H2 (arm64, x64)
KB5050021
24H2 (arm64, x64)
KB5050009
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21343