CVE-2026-65671: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Remote Access API allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in the Windows Remote Access API of Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher-level access to the system. The vulnerability is tracked as CVE-2026-65671 and is classified under CWE-122 (Heap-based Buffer Overflow). Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows a local authorized attacker to elevate their privileges, potentially leading to full control over the affected system. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability.
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-2026-65671 to remediate this vulnerability.
CVE-2026-65671: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows Remote Access API 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 is a heap-based buffer overflow in the Windows Remote Access API of Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher-level access to the system. The vulnerability is tracked as CVE-2026-65671 and is classified under CWE-122 (Heap-based Buffer Overflow). Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows a local authorized attacker to elevate their privileges, potentially leading to full control over the affected system. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability.
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-2026-65671 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-22T18:16:01.897Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65671","vendor":"Microsoft"}]
Threat ID: 6a7b582dbf8831d539156377
Added to database: 08/11/2026, 17:13:17 UTC
Last enriched: 08/11/2026, 20:12:01 UTC
Last updated: 08/12/2026, 00:21:06 UTC
Views: 2
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