The vulnerability in the implementation of the Secure Boot protocol for operating systems with Windows, which allows attackers to circumvent existing security restrictions.

The vulnerability in the implementation of the Secure Boot protocol for Windows operating systems is related to the expiration of the validity periods of certificates KEK, UEFI, and PCA. Exploiting this vulnerability could allow an attacker to circumvent existing security restrictions...

CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

UBUNTU-CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

CVE-2024-8105

A flaw was found in PKfail, a firmware supply-chain issue affecting hundreds of device models in the UEFI ecosystem. The Secure Boot "master key," known as the Platform Key, which manages the Secure Boot databases and maintains the chain of trust from firmware to the operating system, is often no...