UEFI CA 2011 revocations to remain mandatory - #460
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UEFI CA 2011 revocations need to remain mandatory because systems with dedicated GPUs may depend on UEFI CA 2011. As Windows Update currently skips applying optional revocations after unrelated PCA 2011 is revoked, marking these UEFI CA 2011 revocations as “optional” leaves systems vulnerable.
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This has been discussed repeatedly and remains a security issue, still unresolved as of 29th August 2026:
Three Canonical images signed by Microsoft Corporation UEFI CA 2011 are marked as
isOptional, meaning Windows Update does not automatically apply these revocations on my latest 25H2 (Build 26200.9278), and I had to append them via firmware Secure Boot Key Management.While Microsoft Corporation UEFI CA 2011 is expired, it remains quasi-required for Windows systems with dedicated graphics cards for many years to come. The affected three Canonical images are associated with a wide range of known Secure Boot vulnerabilities: CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707.
Strongly suggest keeping these three UEFI CA 2011 revocations mandatory so the intended Secure Boot protection is automatically applied through Windows Update.
Maybe it can be clarified why the optional revocations are not rolled out on systems with the respective certs present; in which case they are not optional. As suggested before, future rollouts may use DB-aware DBX servicing to prevent major security gaps and optimize NVRAM storage (#447).