CVE-2026-5818EPSS p14.3%

CVE-2026-5818CVE-2026-5818

Description

Incorrect check of function return value in Caliptra Core Runtime Firmware (ActivateFirmwareCmd::activate_fw 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.

Scoring

EPSS0.24% probability of exploitation · percentile 14.3% · 2026-10-05T12:00:23Z
Last modified2026-06-25
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.