CVE-2026-50489: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
CVE-2026-50489 is a heap-based buffer overflow vulnerability in the Windows Win32K component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 8.8. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Win32K subsystem of Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local access and limited privileges can exploit this flaw to escalate their privileges to a higher level. The vulnerability is tracked as CWE-122. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability with high severity as indicated by the CVSS score of 8.8.
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-2026-50489 to remediate this vulnerability.
CVE-2026-50489: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
CVE-2026-50489 is a heap-based buffer overflow vulnerability in the Windows Win32K component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 8.8. An official fix is available from Microsoft.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap-based buffer overflow in the Win32K subsystem of Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local access and limited privileges can exploit this flaw to escalate their privileges to a higher level. The vulnerability is tracked as CWE-122. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability with high severity as indicated by the CVSS score of 8.8.
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-2026-50489 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:59:53.337Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50489","vendor":"Microsoft"}]
Threat ID: 6a5676a668715ace43f09631
Added to database: 07/14/2026, 17:49:26 UTC
Last enriched: 07/14/2026, 23:04:22 UTC
Last updated: 07/15/2026, 03:47:28 UTC
Views: 2
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