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CVE

CVE-2025-21343

Windows Web Threat Defense User Service Information Disclosure Vulnerability

Windows Web Threat Defense User Service Information Disclosure Vulnerability.

HIGH · CVSS 7.5 EPSS 0.05388
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  • EPSS percentile: top 10% of all CVEs by exploitation likelihood
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-269Improper Privilege Management
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Affected Products & Versions

3
microsoft windows 11 22h2< 10.0.22621.4751
microsoft windows 11 23h2< 10.0.22631.4751
microsoft windows 11 24h2< 10.0.26100.2894
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Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Jan 2025 · 06:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2025-21343Information Disclosure
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