CVE-2026-70344: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a stack-based buffer overflow in the Windows Installer of Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some level of authorization and can lead to privilege escalation, granting the attacker higher system privileges. The vulnerability is tracked as CWE-121. Microsoft has published an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this stack-based buffer overflow to elevate privileges, potentially gaining higher-level access to the system. This could allow the attacker to perform actions normally restricted to administrators or system processes, impacting confidentiality, integrity, and availability of the affected system.
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-2026-70344 to remediate this vulnerability.
CVE-2026-70344: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a stack-based buffer overflow in the Windows Installer of Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some level of authorization and can lead to privilege escalation, granting the attacker higher system privileges. The vulnerability is tracked as CWE-121. Microsoft has published an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this stack-based buffer overflow to elevate privileges, potentially gaining higher-level access to the system. This could allow the attacker to perform actions normally restricted to administrators or system processes, impacting confidentiality, integrity, and availability of the affected system.
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-2026-70344 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-04T00:04:56.037Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70344","vendor":"Microsoft"}]
Threat ID: 6a7b5841bf8831d539156a64
Added to database: 08/11/2026, 17:13:37 UTC
Last enriched: 08/11/2026, 17:27:17 UTC
Last updated: 08/12/2026, 00:23:50 UTC
Views: 4
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