CVE-2025-21343— Windows Web Threat Defense User Service Information Disclosure Vulnerability
Quick assessment
Affected
Microsoft Windows 11 version 22H2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft Windows是美国微软（Microsoft）公司的一套个人设备使用的操作系统。 Microsoft Windows Web Threat Defense User Service存在安全漏洞。攻击者利用该漏洞可以获取敏感信息。以下产品和版本受到影响：Windows 11 Version 22H2 for ARM64-based Systems,Windows 11 Version 22H2 for x64-based Systems,Windows 11 Version 23H2 f
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local SystemAffected Version Matrix 4
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0< 10.0.22621.4751 |
affected |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0< 10.0.22631.4751 |
affected |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0< 10.0.22631.4751 |
affected |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0< 10.0.26100.2894 |
affected |
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I. Basic Information for CVE-2025-21343
Vulnerability Information
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Vulnerability Title
Windows Web Threat Defense User Service Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows Web Threat Defense User Service Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows是美国微软（Microsoft）公司的一套个人设备使用的操作系统。 Microsoft Windows Web Threat Defense User Service存在安全漏洞。攻击者利用该漏洞可以获取敏感信息。以下产品和版本受到影响：Windows 11 Version 22H2 for ARM64-based Systems,Windows 11 Version 22H2 for x64-based Systems,Windows 11 Version 23H2 f
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 ~ 10.0.22621.4751 | - |
|
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 ~ 10.0.22631.4751 | - |
|
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 ~ 10.0.22631.4751 | - |
|
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 ~ 10.0.26100.2894 | - |
|
II. Public POCs for CVE-2025-21343
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-21343 (1)
Same Patch Batch · Microsoft · 2025-01-14 · 157 CVEs total
| CVE-2025-21298 | 9.8 CRITICAL | Windows OLE Remote Code Execution Vulnerability |
| CVE-2025-21311 | 9.8 CRITICAL | Windows NTLM V1 Elevation of Privilege Vulnerability |
| CVE-2025-21307 | 9.8 CRITICAL | Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability |
| CVE-2025-21292 | 8.8 HIGH | Windows Search Service Elevation of Privilege Vulnerability |
| CVE-2025-21266 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21282 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21293 | 8.8 HIGH | Active Directory Domain Services Elevation of Privilege Vulnerability |
| CVE-2025-21291 | 8.8 HIGH | Windows Direct Show Remote Code Execution Vulnerability |
| CVE-2025-21302 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21303 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21306 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21176 | 8.8 HIGH | .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability |
| CVE-2025-21178 | 8.8 HIGH | Visual Studio Remote Code Execution Vulnerability |
| CVE-2025-21273 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21223 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21240 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21238 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21417 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21245 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
| CVE-2025-21409 | 8.8 HIGH | Windows Telephony Service Remote Code Execution Vulnerability |
Showing top 20 of 157 CVEs. View all on vendor page → →
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V. Comments for CVE-2025-21343
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