CVE-2026-68838: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
CVE-2026-68838 is a high-severity stack-based buffer overflow vulnerability in the NTFS component of Microsoft Windows 10 Version 1607 and related builds. It allows an authorized attacker to elevate privileges over a network. The vulnerability affects multiple Windows 10 builds and earlier Windows versions as specified. An official fix is available from Microsoft.
CVSS v3.1
Score 8.0high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a stack-based buffer overflow in the Windows NTFS driver that can be exploited by an authorized attacker over a network to elevate privileges. The flaw exists in multiple Windows 10 versions and some earlier Windows builds. The CVSS 3.1 base score is 8.0, indicating high severity with network attack vector, low attack complexity, and requiring privileges and user interaction. Confidentiality, integrity, and availability impacts are all high. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise, data loss, or disruption of service. The vulnerability affects confidentiality, integrity, and availability with high impact.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68838 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-31T16:47:02.144Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68838","vendor":"Microsoft"}]
Threat ID: 6aa044d4acd9273b49fa7c5d
Added to database: 09/08/2026, 17:24:36 UTC
Last enriched: 10/16/2026, 20:54:36 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 24
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