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type: cve · created: 2026-11-05 · updated: 2026-11-05 · tags: [cve] · confidence: medium · severity: medium · affected_sectors: [global] · au_impact: false

Both bootkits exploit "Baton Drop" (CVE-2022-21894), a logic flaw in the Windows boot manager Microsoft patched in 2022; Microsoft's 2023–24 mitigations added a new signing certificate (Windows UEFI CA 2023) and a path to revoke trust in the older Windows Production PCA 2011 certificate — but these only protect systems where administrators manually activate the revocations after installing the patches.

Attribute Detail
CVE CVE-2022-21894
CVSS 4.4 (MEDIUM)
Vendor / product microsoft
Reported 2026-11-05