CVE-2026-54109: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 1607
CVE-2026-54109 is an integer overflow or wraparound vulnerability in the Windows Resilient File System (ReFS) component of Microsoft Windows 10 Version 1607. This flaw allows an authorized local attacker to execute arbitrary code on the affected system. The vulnerability has a high severity rating with a CVSS score of 7.8. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow or wraparound in the Windows Resilient File System (ReFS) on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local privileges and no user interaction. Successful exploitation could lead to full confidentiality, integrity, and availability compromise by enabling code execution. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this integer overflow vulnerability in ReFS to execute arbitrary code with elevated privileges, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. There are no known exploits in the wild at this time.
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.
CVE-2026-54109: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 1607
Description
CVE-2026-54109 is an integer overflow or wraparound vulnerability in the Windows Resilient File System (ReFS) component of Microsoft Windows 10 Version 1607. This flaw allows an authorized local attacker to execute arbitrary code on the affected system. The vulnerability has a high severity rating with a CVSS score of 7.8. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow or wraparound in the Windows Resilient File System (ReFS) on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local privileges and no user interaction. Successful exploitation could lead to full confidentiality, integrity, and availability compromise by enabling code execution. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this integer overflow vulnerability in ReFS to execute arbitrary code with elevated privileges, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. There are no known exploits in the wild at this time.
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.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-11T20:33:37.835Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54109","vendor":"Microsoft"}]
Threat ID: 6a566f7b68715ace43e6bade
Added to database: 07/14/2026, 17:18:51 UTC
Last enriched: 07/15/2026, 01:04:27 UTC
Last updated: 07/15/2026, 01:04:27 UTC
Views: 3
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