CVE-2026-62736: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 version 23H2
Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-62736) involves a heap-based buffer overflow in the Windows DHCP Client on Windows 11 version 23H2 (build 10.0.22631.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher-level permissions on the system. The vulnerability is tracked under CWE-122. Microsoft has published an official security update to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, potentially leading to full control over the affected system. The confidentiality, integrity, and availability of the system can be fully compromised due to the high impact scores in the CVSS vector.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62736 for detailed patch information and deployment guidance.
CVE-2026-62736: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 version 23H2
Description
Heap-based buffer overflow in Windows DHCP Client 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 (CVE-2026-62736) involves a heap-based buffer overflow in the Windows DHCP Client on Windows 11 version 23H2 (build 10.0.22631.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher-level permissions on the system. The vulnerability is tracked under CWE-122. Microsoft has published an official security update to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, potentially leading to full control over the affected system. The confidentiality, integrity, and availability of the system can be fully compromised due to the high impact scores in the CVSS vector.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62736 for detailed patch information and deployment guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T20:58:12.787Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62736","vendor":"Microsoft"}]
Threat ID: 6a7b580fbf8831d539155b62
Added to database: 08/11/2026, 17:12:47 UTC
Last enriched: 08/11/2026, 22:12:11 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
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