VulnerabilityAnalyzed
CVE-2025-21343
Windows Web Threat Defense User Service Information Disclosure Vulnerability
HIGH 7.5EPSS 1.35%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Windows Web Threat Defense User Service Information Disclosure Vulnerability
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.35% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- microsoft/windows 11 22h2 · microsoft/windows 11 23h2 · microsoft/windows 11 24h2
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21343Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.