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 of Windows 11 Version 24H2 (build 10.0.26100.0). An authorized local attacker can exploit this flaw to elevate privileges, potentially gaining higher system rights. The vulnerability has been assigned a CVSS 3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges on the affected Windows 11 system, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability with high impact ratings. There are no known exploits in the wild at this time.
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 to remediate this vulnerability. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33840 for detailed patch information and deployment instructions.
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.
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 of Windows 11 Version 24H2 (build 10.0.26100.0). An authorized local attacker can exploit this flaw to elevate privileges, potentially gaining higher system rights. The vulnerability has been assigned a CVSS 3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges on the affected Windows 11 system, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability with high impact ratings. There are no known exploits in the wild at this time.
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 to remediate this vulnerability. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33840 for detailed patch information and deployment instructions.
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: 5/12/2026, 5:37:00 PM
Last enriched: 5/12/2026, 7:24:14 PM
Last updated: 5/13/2026, 4:48:50 AM
Views: 2
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