CVE-2026-5818
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
MCU Firmware Update Authentication Bypass on Caliptra Core
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Core Runtime Firmware
- Vendor
- Caliptra
- Product
- Core Runtime Firmware
- Platforms
- Unknown
- Default status
unaffected- Package
- Core Runtime Firmware
- Package collection
- https://github.com/chipsalliance/caliptra-sw
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.0.0 | affected | semver | Unavailable | 2.0.1 | None listed |
| 2.1.0 | affected | semver | Unavailable | Unavailable | None listed |
| 2.0.2 | unaffected | semver | Unavailable | Unavailable | None listed |
| 2.1.1 | unaffected | semver | Unavailable | Unavailable | None listed |