CVEvulnerability

CVE-2026-33243

8.2 HIGH Published 2026-03-20 Modified 2026-09-11 Official page ↗
Status
Analyzed
Published
2026-03-20
Last modified
2026-09-11
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.2 HIGH — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-345

Description

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corresponding backport to 2025.09.3), an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a signed configuration. 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 could therefore be modified to allow booting different images than those that have been verified. This issue has been patched in barebox versions 2026.03.1 and backported to 2025.09.3.

Affected configurations

• pengutronix barebox (>= 2016.03.0 < 2025.09.3) • pengutronix barebox (>= 2025.10.0 < 2026.03.1)

Related

Weakness · CWE (1)

  • CWE-345 Insufficient Verification of Data Authenticity weakness

References