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Vulnerability DatabaseCVE-2025-21343
CVE-2025-21343:
vulnerability analysis and mitigation
Overview
Windows Web Threat Defense User Service Information Disclosure Vulnerability (CVE-2025-21343) was disclosed on January 14, 2025. This vulnerability affects multiple versions of Windows 11, including 22H2, 23H2, and 24H2 (NVD).
Technical details
The vulnerability has been assigned a CVSS v3.1 base score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. This indicates that the vulnerability is network-accessible, requires low attack complexity, needs no privileges, requires no user interaction, and can result in high confidentiality impact without affecting integrity or availability (NVD).
Impact
The vulnerability allows unauthorized information disclosure in the Windows Web Threat Defense User Service. Given the CVSS scoring, it can lead to high confidentiality impact, potentially exposing sensitive information to unauthorized parties (NVD).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability through KB5050021 for Windows 11 versions 22H2 and 23H2, and KB5050009 for Windows 11 version 24H2 (Rapid7).
Additional resources
Source: This report was generated using AI
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