CVE-2021-27090-Secure-Kernel-EoP-Patch-Downgrade

CVE-2021-27090 Secure Kernel Elevation of Privilege Patch Downgrade

This usage example downgrades the patch of CVE-2021-27090, Secure Kernel elevation of privilege vulnerability.

Execution Steps

1. Install Windows Downdate as instructed here
2. Run the following command from the base repository directory

   windows_downdate.py --config-xml examples/CVE-2021-27090-Secure-Kernel-EoP-Patch-Downgrade/Config.xml
   

Tested Versions

This usage example was tested against Windows 10 22h2 (19045.4046)

Issued CVE-2024-21302

This usage example was reported to Microsoft and CVE-2024-21302 was issued.

Credits

Saar Amar