CVE-2026-70346: 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 is a stack-based buffer overflow (CWE-121) in the Windows Installer component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It enables an authorized local attacker to elevate privileges by exploiting the overflow. The vulnerability has been assigned CVE-2026-70346 and has a CVSS v3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix for this issue, as referenced in their security update guide.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70346. Applying this patch will remediate the vulnerability.
CVE-2026-70346: 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 is a stack-based buffer overflow (CWE-121) in the Windows Installer component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It enables an authorized local attacker to elevate privileges by exploiting the overflow. The vulnerability has been assigned CVE-2026-70346 and has a CVSS v3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix for this issue, as referenced in their security update guide.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70346. Applying this patch will remediate the 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-2026-70346","vendor":"Microsoft"}]
Threat ID: 6a7b5841bf8831d539156a6a
Added to database: 08/11/2026, 17:13:37 UTC
Last enriched: 08/11/2026, 17:26:59 UTC
Last updated: 08/12/2026, 00:54:54 UTC
Views: 5
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