CVE-2026-50386: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
CVE-2026-50386 is a heap-based buffer overflow vulnerability in the NTFS component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an unauthorized attacker to execute code locally with high impact on confidentiality, integrity, and availability. The vulnerability has a high severity score of 7.8 and has an official patch available from Microsoft.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in the NTFS file system implementation on Windows 10 Version 1607 (build 10.0.14393.0). It enables an unauthorized attacker to execute arbitrary code locally, potentially leading to full system compromise. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required but user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows local attackers to execute arbitrary code with high impact on system confidentiality, integrity, and availability. This could lead to full system compromise or denial of service. No known exploits in the wild have been reported at this time.
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-2026-50386 to remediate this vulnerability.
CVE-2026-50386: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
CVE-2026-50386 is a heap-based buffer overflow vulnerability in the NTFS component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an unauthorized attacker to execute code locally with high impact on confidentiality, integrity, and availability. The vulnerability has a high severity score of 7.8 and has an official patch available from Microsoft.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-based buffer overflow in the NTFS file system implementation on Windows 10 Version 1607 (build 10.0.14393.0). It enables an unauthorized attacker to execute arbitrary code locally, potentially leading to full system compromise. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required but user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows local attackers to execute arbitrary code with high impact on system confidentiality, integrity, and availability. This could lead to full system compromise or denial of service. No known exploits in the wild have been reported at this time.
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-2026-50386 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:55:14.745Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50386","vendor":"Microsoft"}]
Threat ID: 6a56769768715ace43f08e3d
Added to database: 07/14/2026, 17:49:11 UTC
Last enriched: 07/15/2026, 00:04:29 UTC
Last updated: 07/15/2026, 00:04:29 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.