CVE-2026-96062: Microsoft Windows Installer heap-based buffer overflow

CVE-2026-96062 · Severity: high · CVSS 7.8 · Published 2026-11-10

Windows Installer, a system component that manages software installation on Windows computers, contains a heap-based buffer overflow vulnerability that allows an authorized attacker to execute arbitrary code with elevated privileges. An attacker with local access to a Windows system could exploit this to gain administrative control and compromise the entire machine.

Technologies: Microsoft Windows Installer. Vendors: Microsoft.

Quick answers

Is CVE-2026-96062 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-96062 being exploited in the wild.
How severe is CVE-2026-96062?
High severity, with a CVSS score of 7.8, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows Installer.
Is there a fix for CVE-2026-96062?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-96062 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-96062?
Check whether you run Microsoft Windows Installer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A heap-based buffer overflow in Windows Installer can be triggered by an authorized local attacker to corrupt heap memory and achieve privilege escalation. The vulnerability requires local access and existing user privileges on the target system. Successful exploitation grants an attacker elevated privileges, potentially leading to arbitrary code execution in the Windows Installer context.

Affected products

  • Microsoft Windows Installer

Timeline

  • 2026-11-10: disclosed

References

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