CVE-2026-33243

Published: Mar 21, 2026 Last Modified: Mar 21, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,2
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: high
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2025.09.3 and from version 2025.10.0 to before version 2026.03.1, when creating a FIT, mkimage(1) sets the hashed-nodes property of the FIT signature node to list which nodes of the FIT were hashed as part of the signing process as these will need to be verified later on by the bootloader. However, hashed-nodes itself is not part of the hash and can therefore be modified by an attacker to trick the bootloader into booting different images than those that have been verified. This issue has been patched in barebox versions 2025.09.3 and 2026.03.1.

345

Insufficient Verification of Data Authenticity

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Other
Potential Impacts:
Varies By Context Unexpected State
Applicable Platforms
Technologies: ICS/OT
View CWE Details
https://github.com/barebox/barebox/commit/aca01795056d51060…
https://github.com/barebox/barebox/commit/aca01795056d51060cb096f9a1ea309361743…
https://github.com/barebox/barebox/security/advisories/GHSA…
https://github.com/barebox/barebox/security/advisories/GHSA-3fvj-q26p-j6h4