CVE-2026-70344
Received Received - Intake

Windows Installer Stack-Based Buffer Overflow

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

Description
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-70344
EUVD
EUVD-2026-56596

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_installer *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

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Executive Summary

This is a stack-based buffer overflow vulnerability in Windows Installer. It allows an authorized attacker with local access to elevate their privileges on the system.

Impact Analysis

An attacker could exploit this to gain higher-level permissions on your system, potentially allowing them to install malicious software, view or modify sensitive data, or take control of your device.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Installer vulnerability. Monitor Microsoft's update guide for the official patch and ensure all systems are updated promptly.

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