CVE-2026-44808: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 version 26H1
Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Windows Desktop Window Manager (DWM) Core Library in Windows 11 version 26H1 (build 10.0.28000.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could allow an attacker to elevate their privileges, potentially gaining higher-level access on the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this heap-based buffer overflow to elevate their privileges, potentially gaining administrative rights or executing code with higher privileges. This could lead to full system compromise or unauthorized actions that require elevated permissions.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44808 to remediate this vulnerability.
CVE-2026-44808: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 version 26H1
Description
Heap-based buffer overflow in Windows DWM Core Library 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
This vulnerability involves a heap-based buffer overflow in the Windows Desktop Window Manager (DWM) Core Library in Windows 11 version 26H1 (build 10.0.28000.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could allow an attacker to elevate their privileges, potentially gaining higher-level access on the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this heap-based buffer overflow to elevate their privileges, potentially gaining administrative rights or executing code with higher privileges. This could lead to full system compromise or unauthorized actions that require elevated permissions.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44808 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-07T20:07:18.271Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44808","vendor":"Microsoft"}]
Threat ID: 6a284cce8dd33fbd85664a0c
Added to database: 06/09/2026, 17:26:38 UTC
Last enriched: 07/29/2026, 21:52:13 UTC
Last updated: 07/31/2026, 19:30:13 UTC
Views: 58
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