CVE-2026-69511: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
CVE-2026-69511 is a heap-based buffer overflow vulnerability in Microsoft Windows Media Foundation affecting multiple Windows 10 versions including Version 1607. This flaw allows an unauthorized attacker to execute code remotely over a network. The vulnerability has a high severity with a CVSS score of 8.8. An official fix is available from Microsoft.
CVSS v3.1
Score 8.8high
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 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
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-2026-69511) is a heap-based buffer overflow in the Windows Media Foundation component of Microsoft Windows 10, including Version 1607 and other specified builds. It enables an attacker without privileges to execute arbitrary code remotely by exploiting the overflow. The vulnerability is confirmed with a CVSS 3.1 score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for the affected versions.
Potential Impact
Successful exploitation allows remote code execution without requiring privileges, potentially leading to full system compromise including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69511 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:09:40.781Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69511","vendor":"Microsoft"}]
Threat ID: 6aa04505acd9273b49fa818f
Added to database: 09/08/2026, 17:25:25 UTC
Last enriched: 10/16/2026, 21:18:14 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 27
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