CVE-2026-85921— Windows Secure Kernel Mode Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Windows 11 version 26H1
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.
Windows 安全内核模式中的双重释放漏洞允许已授权的攻击者在本地提升权限。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0< 10.0.28000.2956 |
affected |
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I. Basic Information for CVE-2026-85921
Vulnerability Information
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Vulnerability Title
Windows Secure Kernel Mode Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 ~ 10.0.28000.2956 | - |
|
II. Public POCs for CVE-2026-85921
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-85921 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-85921
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