CVE-2026-50501: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-50501 and classified under CWE-121 (Stack-based Buffer Overflow), affects the Windows Resilient File System (ReFS) in Windows 11 Version 24H2 (build 10.0.26100.0). It enables an attacker with local access to execute arbitrary code due to improper handling of buffer boundaries. The vulnerability has been assigned a CVSS v3.1 base score of 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to execute arbitrary code on the affected system, potentially leading to full compromise of system confidentiality, integrity, and availability. This could allow the attacker to run malicious code with elevated privileges, disrupt system operations, or access sensitive information.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this issue. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50501 for detailed update instructions.
CVE-2026-50501: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Description
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-50501 and classified under CWE-121 (Stack-based Buffer Overflow), affects the Windows Resilient File System (ReFS) in Windows 11 Version 24H2 (build 10.0.26100.0). It enables an attacker with local access to execute arbitrary code due to improper handling of buffer boundaries. The vulnerability has been assigned a CVSS v3.1 base score of 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to execute arbitrary code on the affected system, potentially leading to full compromise of system confidentiality, integrity, and availability. This could allow the attacker to run malicious code with elevated privileges, disrupt system operations, or access sensitive information.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this issue. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50501 for detailed update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:59:53.337Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50501","vendor":"Microsoft"}]
Threat ID: 6a5676a768715ace43f09677
Added to database: 07/14/2026, 17:49:27 UTC
Last enriched: 08/13/2026, 15:05:48 UTC
Last updated: 08/26/2026, 11:27:33 UTC
Views: 85
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