CVE-2026-49793: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
CVE-2026-49793 is a heap-based buffer overflow vulnerability in the Windows Resilient File System (ReFS) component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an authorized local attacker to execute arbitrary code on the affected system. The vulnerability has a high severity with a CVSS score of 7.8. An official fix is available from Microsoft.
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). An attacker with local privileges can exploit this flaw to execute arbitrary code, potentially leading to full system compromise. The vulnerability is tracked as CWE-122. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to execute arbitrary code with elevated privileges, compromising the confidentiality, integrity, and availability of the affected system. The CVSS 3.1 base score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49793 for detailed patching instructions.
CVE-2026-49793: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
CVE-2026-49793 is a heap-based buffer overflow vulnerability in the Windows Resilient File System (ReFS) component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an authorized local attacker to execute arbitrary code on the affected system. The vulnerability has a high severity with a CVSS score of 7.8. An official fix is available from Microsoft.
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). An attacker with local privileges can exploit this flaw to execute arbitrary code, potentially leading to full system compromise. The vulnerability is tracked as CWE-122. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to execute arbitrary code with elevated privileges, compromising the confidentiality, integrity, and availability of the affected system. The CVSS 3.1 base score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49793 for detailed patching instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.208Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49793","vendor":"Microsoft"}]
Threat ID: 6a566f6d68715ace43e6b54b
Added to database: 07/14/2026, 17:18:37 UTC
Last enriched: 07/15/2026, 01:35:10 UTC
Last updated: 07/15/2026, 01:35:10 UTC
Views: 3
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