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vulnerabilityCVE-2026-33243
Name
CVE-2026-33243
Source
NVD ( link)Debian ( link)
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.
Published Date
Updated Date
Workaround
-

Analysis#


Affected Component
Analysis
u-boot
Exploitable

Vulnerability Ratings#


8.2
CVSSv31
NaN
other

Others affected components#


Name
Project
Project Version
Version
Status
buildroot
2025.02.x
2021.07
Exploitable
buildroot
master
2026.04
Not Affected
yocto
master
2026.04
Exploitable
yocto
scarthgap
2024.01
Exploitable