CVE-2026-5818
MCU Firmware Update Authentication Bypass on Caliptra Core
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-253 |
| Vendor | caliptra |
| Product | core runtime firmware |
| Published | Jun 23, 2026 |
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Affected Versions
Caliptra / Core Runtime Firmware
2.0.0 ≤ 2.0.1 2.1.0
References
Credits
NVIDIA Offensive Security Research (OSR) team