A new tool called Windows Downdate can trick your PC into thinking that it's fully patched, all the while exposing you to dangerous vulnerabilities.
Windows Update may occasionally backfire with faulty patches, but for the most part, it’s meant to keep us safe from the latest threats. Microsoft regularly pushes new patches that address potential vulnerabilities. But what if there were a tool that could undo every Windows Update and leave your PC exposed to all the threats Microsoft thought it had already fixed? Bad news: Such a tool now exists, and it’s called Windows Downdate.
Recommended Videos In the case of Windows Downdate, if this fell into the wrong hands, the impact could be staggering. The exploit relies on a flaw in Windows Update to install older updates where certain vulnerabilities haven’t been patched yet. Leviev used the tool to downgrade dynamic link libraries , drivers, and even the NT kernel, which is a core component in Windows. This is achieved while bypassing all verification, and the result is entirely invisible and irreversible.
Leviev also discovered that the entire virtualization stack in Windows was also susceptible to this exploit; the researcher managed to downgrade Credential Guard’s Isolated User Mode Process, Hyper-V’s hypervisor, and Secure Kernel. Leviev even found “multiple ways” to turn off virtualization-based security in Windows, and this was still possible even when UEFI locks were enforced.
Cybersecurity Windows Windows Downdate Windows Update
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