CVE-2026-5818
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
- Severity
- HIGH
- CVSS base score
- 7.2
- CVSS vector
- CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:H/SC:H/SI:H/SA:H
- EPSS probability
- 0.24%
- CWE
- CWE-253
- Published
- 2026-06-23
- Last modified
- 2026-06-24
Affected products
- Caliptra Core Runtime Firmware
- Caliptra Core Runtime Firmware
- Caliptra Core Runtime Firmware
- Caliptra Core Runtime Firmware
Weakness type
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