Windows Installer Elevation of Privilege Vulnerability

Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely CVE-2026-96073 · score 7/10

What could go wrong?

Someone who already has a normal account could give themselves full admin rights.

How urgent is it?

Check Microsoft’s page for details.

Who is affected?

Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016, Windows Server 2016 (Server Core installation) and 24 more versions

What should I do?

Install this month’s updates via Windows Update, Intune or your update tool, then restart.

Known problems

Microsoft lists known issues per update: KB5126835, KB5126836, KB5126868, KB5126651, KB5126657, KB5126655. Official page.