CVE-2026-33840: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
CVE-2026-33840 is a use-after-free vulnerability (CWE-416) in the Windows Win32K ICOMP component on Windows 11 Version 24H2 (build 10.0.26100.0). It enables an authorized local attacker to elevate privileges by exploiting the improper handling of memory after it has been freed. Microsoft has published an official fix for this vulnerability, mitigating the risk of privilege escalation.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access and control. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this vulnerability.
CVE-2026-33840: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Description
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-33840 is a use-after-free vulnerability (CWE-416) in the Windows Win32K ICOMP component on Windows 11 Version 24H2 (build 10.0.26100.0). It enables an authorized local attacker to elevate privileges by exploiting the improper handling of memory after it has been freed. Microsoft has published an official fix for this vulnerability, mitigating the risk of privilege escalation.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access and control. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-24T00:52:01.353Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33840","vendor":"Microsoft"}]
Threat ID: 6a03653ccbff5d861008c3d0
Added to database: 05/12/2026, 17:37:00 UTC
Last enriched: 06/19/2026, 17:31:31 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 86
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