CVE-2026-72929
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Improper Integrity Check Validation in Windows Installer

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description
Improper validation of integrity check value in Windows Installer allows an authorized attacker to elevate privileges locally.

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Meta Information

Published
2026-09-08
Last Modified
2026-09-09
Generated
2026-09-09
AI Q&A
2026-09-09
EPSS Evaluated
N/A
NVD
CVE-2026-72929

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-354 The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

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Executive Summary

This vulnerability involves improper validation of integrity check values in Windows Installer. An authorized attacker can exploit this to elevate their privileges locally on a system.

Impact Analysis

An attacker could gain higher-level access to your system, allowing them to install malicious software, view or modify sensitive data, or take control of your device without proper authorization.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Installer integrity check validation flaw. Monitor Microsoft's update guide for specific patches related to CVE-2026-72929.

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