CVE-2026-58530: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Windows Resilient File System (ReFS) on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access and user interaction but does not require privileges. Successful exploitation could lead to arbitrary code execution with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this issue.
Potential Impact
An unauthorized attacker with local access and user interaction can exploit this vulnerability to execute arbitrary code on the affected system. The impact includes full compromise of confidentiality, integrity, and availability of the system. There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58530 to remediate this vulnerability.
CVE-2026-58530: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-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 involves a heap-based buffer overflow in the Windows Resilient File System (ReFS) on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access and user interaction but does not require privileges. Successful exploitation could lead to arbitrary code execution with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this issue.
Potential Impact
An unauthorized attacker with local access and user interaction can exploit this vulnerability to execute arbitrary code on the affected system. The impact includes full compromise of confidentiality, integrity, and availability of the system. There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58530 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T04:33:41.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58530","vendor":"Microsoft"}]
Threat ID: 6a5676c068715ace43f0b133
Added to database: 07/14/2026, 17:49:52 UTC
Last enriched: 07/14/2026, 18:24:04 UTC
Last updated: 07/14/2026, 20:03:48 UTC
Views: 2
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