CVE-2026-49789: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
A stack-based buffer overflow vulnerability exists in the NTFS component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an authorized local attacker to elevate privileges on the affected system. The vulnerability has a high severity score and has been officially fixed by Microsoft.
AI Analysis
Technical Summary
CVE-2026-49789 is a stack-based buffer overflow vulnerability in the Windows NTFS driver on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to elevate privileges, potentially gaining higher system rights. The vulnerability is tracked under CWE-121 (stack-based buffer overflow). Microsoft has released an official fix addressing this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining full control over the affected system. The CVSS v3.1 base score is 7.3 (High), reflecting 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 as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49789 to remediate this vulnerability.
CVE-2026-49789: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
A stack-based buffer overflow vulnerability exists in the NTFS component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an authorized local attacker to elevate privileges on the affected system. The vulnerability has a high severity score and has been officially fixed by Microsoft.
CVSS v3.1
Score 7.3high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49789 is a stack-based buffer overflow vulnerability in the Windows NTFS driver on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to elevate privileges, potentially gaining higher system rights. The vulnerability is tracked under CWE-121 (stack-based buffer overflow). Microsoft has released an official fix addressing this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining full control over the affected system. The CVSS v3.1 base score is 7.3 (High), reflecting 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 as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49789 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.207Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49789","vendor":"Microsoft"}]
Threat ID: 6a566f6d68715ace43e6b53d
Added to database: 07/14/2026, 17:18:37 UTC
Last enriched: 07/15/2026, 01:47:47 UTC
Last updated: 07/15/2026, 01:47:47 UTC
Views: 2
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