CVE-2026-69819: CWE-787: Out-of-bounds Write in Microsoft Windows 10 Version 1607
Description
CVE-2026-69819 is a critical out-of-bounds write vulnerability in the RPC Runtime component of Microsoft Windows 10 Version 1607 and related versions. This flaw allows an unauthorized attacker to execute code remotely over a network without user interaction. The vulnerability affects multiple Windows 10 builds and Windows Server versions as specified. An official fix is available from Microsoft.
CVSS v3.1
Score 9.8critical
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
CVE-2026-69819 is an out-of-bounds write vulnerability (CWE-787) in the RPC Runtime of Microsoft Windows 10 Version 1607 and other related versions. This vulnerability enables an unauthenticated attacker to execute arbitrary code remotely over a network. The CVSS 3.1 base score is 9.8 (critical), reflecting its high impact on confidentiality, integrity, and availability. Multiple Windows 10 and Windows Server builds are affected, with patches released by Microsoft to address the issue. The vendor advisory confirms the availability of an official fix.
Potential Impact
Successful exploitation of this vulnerability allows remote code execution without requiring user interaction or privileges, potentially leading to full system compromise. The impact includes complete loss of confidentiality, integrity, and availability of the affected system.
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-2026-69819 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T22:50:31.851Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69819","vendor":"Microsoft"}]
Threat ID: 6aa04531acd9273b49fa9a17
Added to database: 09/08/2026, 17:26:09 UTC
Last enriched: 10/16/2026, 21:35:32 UTC
Last updated: 10/23/2026, 13:15:20 UTC
Views: 57
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