CVE-2026-65786: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-65786) involves a heap-based buffer overflow in the Desktop Window Manager of Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges. The issue is classified under CWE-122 (Heap-based Buffer Overflow). Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows a local authorized attacker to gain elevated privileges, potentially leading to full system compromise. The confidentiality, integrity, and availability of the affected system can be fully impacted as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at this time.
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-2026-65786 to remediate this vulnerability.
CVE-2026-65786: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-65786) involves a heap-based buffer overflow in the Desktop Window Manager of Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges. The issue is classified under CWE-122 (Heap-based Buffer Overflow). Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows a local authorized attacker to gain elevated privileges, potentially leading to full system compromise. The confidentiality, integrity, and availability of the affected system can be fully impacted as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at this time.
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-2026-65786 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-22T21:30:09.119Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65786","vendor":"Microsoft"}]
Threat ID: 6a7b5832bf8831d539156465
Added to database: 08/11/2026, 17:13:22 UTC
Last enriched: 08/11/2026, 19:56:31 UTC
Last updated: 09/25/2026, 13:47:47 UTC
Views: 26
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