CVE-2026-70345: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Windows Installer on Windows 10 Version 1607 (build 10.0.14393.0). An authorized local attacker can exploit this flaw to gain elevated privileges, potentially compromising system integrity. The vulnerability is tracked as CWE-122 and has been assigned CVE-2026-70345. Microsoft has released an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, which can lead to full system compromise including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70345. Applying this patch will remediate the vulnerability.
CVE-2026-70345: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-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 heap-based buffer overflow in the Windows Installer on Windows 10 Version 1607 (build 10.0.14393.0). An authorized local attacker can exploit this flaw to gain elevated privileges, potentially compromising system integrity. The vulnerability is tracked as CWE-122 and has been assigned CVE-2026-70345. Microsoft has released an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, which can lead to full system compromise including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70345. 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-2026-70345","vendor":"Microsoft"}]
Threat ID: 6a7b5841bf8831d539156a67
Added to database: 08/11/2026, 17:13:37 UTC
Last enriched: 08/11/2026, 17:27:08 UTC
Last updated: 08/12/2026, 00:23:50 UTC
Views: 4
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