CVE-2026-5818 MCU Firmware Update Authentication Bypass on Caliptra Core

Incorrect check of function return value in Caliptra Core Runtime Firmware ActivateFirmwareCmd::activatefw modules allows bypass of Caliptra Core's verification of the MCU FW during a hitless update. This issue affects Core Runtime Firmware: from 2.0.0 through 2.0.1, 2.1.0...

PT-2026-51609

Name of the Vulnerable Software and Affected Versions Caliptra Core Runtime Firmware versions 2.0.0 through 2.0.1 Caliptra Core Runtime Firmware version 2.1.0 Description An incorrect check of a function return value within the ActivateFirmwareCmd::activate fw modules allows the bypass of the...