CVE-2026-88110: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Description
CVE-2026-88110 is a heap-based buffer overflow vulnerability in the Windows Graphics Kernel of Microsoft Windows 11 Version 24H2. This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity score of 7.0 and has been officially fixed by Microsoft.
CVSS v3.1
Score 7.0high
Affected software
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 Version 26H2
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-88110) involves a heap-based buffer overflow in the Windows Graphics Kernel component of Microsoft Windows 11 Version 24H2. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The vulnerability is tracked under CWE-122 and has a CVSS v3.1 base score of 7.0, indicating high severity. Microsoft has released an official fix for this issue, and no known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining higher system rights than intended. This could lead to unauthorized actions or control over the affected system. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security updates provided by Microsoft to affected Windows 11 Version 24H2 systems as soon as possible to mitigate the risk. There are no indications that additional mitigations are required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-09T21:51:51.954Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88110","vendor":"Microsoft"}]
Threat ID: 6ace85592cdf04f6569ff505
Added to database: 10/13/2026, 19:24:09 UTC
Last enriched: 10/14/2026, 01:49:46 UTC
Last updated: 10/14/2026, 01:49:46 UTC
Views: 3
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