An Update on Windows Downdate
In August, I shared a blog on my most recent research project called Windows Downdate, which I first presented at Black Hat USA 2024 and DEF CON 32 (2024). In it, I explained how I was able to develop a tool to take over the Windows Update process to craft custom downgrades on critical OS components to expose previously fixed vulnerabilities. By using this downgrade ability, I discovered CVE-2024-21302, a privilege escalation vulnerability affecting the entire Windows virtualization stack.