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Microsoft has pushed the KB5012170 security update on Windows 11 and Windows 10 once again. The update, supposed to patch a Secure Boot DBX GRUB vulnerability, has known issues in it.
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Following reports of Microsoft pushing a buggy update on Windows 11 22H2, the software giant has acknowledged the issue and has added that the update was pushed onto Windows 10 22H2 as well.
Microsoft is starting to push the KB5012170 security update on Windows 11 22H2. The update supposed to patch a Secure Boot DBX GRUB vulnerability, though, has a lot of known issues.
Microsoft has acknowledged what users have been reporting for several days. As it turns out, the Security update for Secure Boot DBX causes some computers to boot into BitLocker recovery.
As it turned out, KB5012170 generates lots of headaches for customers. Besides the need to update UEFI to install updates, it causes multiple computers to boot into BitLocker recovery.
Microsoft has issued a warning about a Secure Boot DBX update failing to install on all supported client and server Windows versions. According to the documentation, a BIOS update might be necessary.
With Patch Tuesday recently, Microsoft released the KB5012170 update which adds new vulnerable UEFI signatures to the Secure Boot DBX. The newly added signatures are related to the GRUB vulnerability.
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