CVE-2026-5818

Vulnerability 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.

Related Weaknesses (CWE)

CWE-253

References

https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-456r-gcjr-

FAQ

What is CVE-2026-5818?

CVE-2026-5818 is a documented vulnerability. 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 updat...

How severe is CVE-2026-5818?

CVSS scoring is not yet available for CVE-2026-5818. Check NVD for updates.

Is there a patch for CVE-2026-5818?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.