CVE-2026-20863: CWE-415: Double Free in Microsoft Windows 11 version 22H3
Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability is a double free condition in the Windows Win32K ICOMP component affecting Windows 11 version 22H3 (build 10.0.22631.0). An authorized local attacker can exploit this flaw to elevate privileges on the affected system. The CVSS v3.1 vector indicates the attack requires local access with high attack complexity and low privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability consequences. Microsoft has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher system rights and control. This can lead to unauthorized access to sensitive information, modification of system settings, or disruption of system availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 11 version 22H3 to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20863: CWE-415: Double Free in Microsoft Windows 11 version 22H3
Description
Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a double free condition in the Windows Win32K ICOMP component affecting Windows 11 version 22H3 (build 10.0.22631.0). An authorized local attacker can exploit this flaw to elevate privileges on the affected system. The CVSS v3.1 vector indicates the attack requires local access with high attack complexity and low privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability consequences. Microsoft has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher system rights and control. This can lead to unauthorized access to sensitive information, modification of system settings, or disruption of system availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 11 version 22H3 to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.381Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae0a60475309f9ae12d
Added to database: 1/13/2026, 6:11:44 PM
Last enriched: 4/3/2026, 12:46:52 PM
Last updated: 5/10/2026, 2:42:38 PM
Views: 83
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