CVE-2026-20840: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Windows NTFS driver on Windows 10 Version 1607. An attacker with local privileges can exploit this flaw to execute arbitrary code, potentially leading to full system compromise. The CVSS vector indicates the attack requires local access with low complexity and privileges, no user interaction, and impacts confidentiality, integrity, and availability at a high level. The vulnerability is officially published and a patch is available from Microsoft.
Potential Impact
Successful exploitation allows an authorized local attacker to execute arbitrary code with elevated privileges, potentially compromising system confidentiality, integrity, and availability. This could lead to full system control by the attacker.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 (build 10.0.14393.0) to remediate this issue. No additional vendor advisory content is provided, so check Microsoft’s official security update channels for the specific patch details and deployment guidance.
CVE-2026-20840: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap-based buffer overflow in the Windows NTFS driver on Windows 10 Version 1607. An attacker with local privileges can exploit this flaw to execute arbitrary code, potentially leading to full system compromise. The CVSS vector indicates the attack requires local access with low complexity and privileges, no user interaction, and impacts confidentiality, integrity, and availability at a high level. The vulnerability is officially published and a patch is available from Microsoft.
Potential Impact
Successful exploitation allows an authorized local attacker to execute arbitrary code with elevated privileges, potentially compromising system confidentiality, integrity, and availability. This could lead to full system control by the attacker.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 (build 10.0.14393.0) to remediate this issue. No additional vendor advisory content is provided, so check Microsoft’s official security update channels for the specific patch details and deployment guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.376Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668adea60475309f9ae09a
Added to database: 1/13/2026, 6:11:42 PM
Last enriched: 4/3/2026, 12:44:44 PM
Last updated: 5/7/2026, 11:38:35 AM
Views: 81
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