CVE-2025-4273: Incorrect UEFI variable attributes check allows usage of invalid certificate

First published: Mon May 05 2025(Updated: )

A vulnerability in the digital signature verification process does not properly validate variable attributes which allows an attacker to bypass signature verification by creating a non-authenticated NVRAM variable. An attacker may to execute arbitrary signed UEFI code and bypass Secure Boot.

Credit: 8338d8cb-57f7-4252-abc0-96fd13e98d21

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