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CVE-2025-26649— Windows Secure Channel Elevation of Privilege 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 Secure Channel是美国微软（Microsoft）公司的一种安全支持提供程序 (SSP)，包含一组安全协议，可通过加密提供身份验证和安全、私密的通信。 Microsoft Windows Secure Channel存在资源管理错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows Server 2022,Windows Server 2022 (Server Core installation),Windows 11 Version

CVSS 7.0 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Microsoft Windows 11 version 22H2 10.0.22621.0< 10.0.22621.5189 affected
Microsoft Windows 11 version 22H3 10.0.22631.0< 10.0.22631.5189 affected
Microsoft Windows 11 Version 23H2 10.0.22631.0< 10.0.22631.5189 affected
Microsoft Windows 11 Version 24H2 10.0.26100.0< 10.0.26100.3775 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.3453 affected
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0< 10.0.25398.1551 affected
Microsoft Windows Server 2025 10.0.26100.0< 10.0.26100.3775 affected
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0< 10.0.26100.3775 affected
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I. Basic Information for CVE-2025-26649

Vulnerability Information
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Vulnerability Title
Windows Secure Channel Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Secure Channel allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Secure Channel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Secure Channel是美国微软（Microsoft）公司的一种安全支持提供程序 (SSP)，包含一组安全协议，可通过加密提供身份验证和安全、私密的通信。 Microsoft Windows Secure Channel存在资源管理错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows Server 2022,Windows Server 2022 (Server Core installation),Windows 11 Version
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 ~ 10.0.22621.5189 -
Microsoft Windows 11 version 22H3 10.0.22631.0 ~ 10.0.22631.5189 -
Microsoft Windows 11 Version 23H2 10.0.22631.0 ~ 10.0.22631.5189 -
Microsoft Windows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.3775 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.3453 -
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 ~ 10.0.25398.1551 -
Microsoft Windows Server 2025 10.0.26100.0 ~ 10.0.26100.3775 -
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.3775 -

II. Public POCs for CVE-2025-26649

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III. Intelligence Information for CVE-2025-26649

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Same Patch Batch · Microsoft · 2025-04-08 · 119 CVEs total

CVE-2025-21205 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-29794 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2025-26669 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability
CVE-2025-21221 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-27477 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-27740 8.8 HIGH Active Directory Certificate Services Elevation of Privilege Vulnerability
CVE-2025-21222 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-26647 8.8 HIGH Windows Kerberos Elevation of Privilege Vulnerability
CVE-2025-27481 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-27737 8.6 HIGH Windows Security Zone Mapping Security Feature Bypass Vulnerability
CVE-2025-26678 8.4 HIGH Windows Defender Application Control Security Feature Bypass Vulnerability
CVE-2025-26663 8.1 HIGH Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
CVE-2025-27482 8.1 HIGH Windows Remote Desktop Services Remote Code Execution Vulnerability
CVE-2025-26671 8.1 HIGH Windows Remote Desktop Services Remote Code Execution Vulnerability
CVE-2025-27480 8.1 HIGH Windows Remote Desktop Services Remote Code Execution Vulnerability
CVE-2025-26670 8.1 HIGH Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability
CVE-2025-27487 8.0 HIGH Remote Desktop Client Remote Code Execution Vulnerability
CVE-2025-26674 7.8 HIGH Windows Media Remote Code Execution Vulnerability
CVE-2025-21204 7.8 HIGH Windows Process Activation Elevation of Privilege Vulnerability
CVE-2025-24073 7.8 HIGH Microsoft DWM Core Library Elevation of Privilege Vulnerability

Showing top 20 of 119 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 11 version 22H2
Same vendor: Microsoft
Same weakness: CWE-362

V. Comments for CVE-2025-26649

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