CVE-2026-47652: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 version 23H2
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-47652) involves a heap-based buffer overflow in the Windows Hyper-V component of Windows 11 version 23H2 (build 10.0.22631.0). An attacker with authorized local access and high privileges can exploit this flaw to execute arbitrary code on the affected system. The vulnerability has a CVSS 3.1 base score of 8.2, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker with high privileges to execute arbitrary code, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at the time of publication.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft for Windows 11 version 23H2 (build 10.0.22631.0) as soon as possible to remediate the issue.
CVE-2026-47652: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 version 23H2
Description
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVSS v3.1
Score 8.2high
Affected software
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 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-2026-47652) involves a heap-based buffer overflow in the Windows Hyper-V component of Windows 11 version 23H2 (build 10.0.22631.0). An attacker with authorized local access and high privileges can exploit this flaw to execute arbitrary code on the affected system. The vulnerability has a CVSS 3.1 base score of 8.2, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker with high privileges to execute arbitrary code, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at the time of publication.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft for Windows 11 version 23H2 (build 10.0.22631.0) as soon as possible to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-19T20:12:27.071Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47652","vendor":"Microsoft"}]
Threat ID: 6a284cf28dd33fbd85665083
Added to database: 06/09/2026, 17:27:14 UTC
Last enriched: 08/14/2026, 13:49:46 UTC
Last updated: 09/12/2026, 22:01:34 UTC
Views: 98
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