CVE-2026-96047: Microsoft Windows Installer use-after-free privilege escalation

CVE-2026-96047 · Severity: high · CVSS 7 · Published 2026-11-10

Windows Installer, a core Windows component responsible for installing and managing applications, contains a use-after-free vulnerability that allows an authenticated attacker to elevate their privileges to system level. An attacker with local access could exploit this flaw to gain elevated permissions and take complete control of the system.

Technologies: Microsoft Windows Installer. Vendors: Microsoft.

Quick answers

Is CVE-2026-96047 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-96047 being exploited in the wild.
How severe is CVE-2026-96047?
High severity, with a CVSS score of 7, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows Installer.
Is there a fix for CVE-2026-96047?
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-2026-96047 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-96047?
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

The vulnerability is a use-after-free condition in Windows Installer that allows privilege escalation through local access. An authenticated/authorized local attacker can exploit this memory corruption flaw to execute arbitrary code with elevated privileges. A patch is available from Microsoft.

Affected products

  • Microsoft Windows Installer

Timeline

  • 2026-11-10: disclosed

References

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