CVE Feed

    Dashboard / CVE / CVE-2026-33243

    CVE-2026-33243

    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:Mar 20, 2026
    Last Modified:Mar 27, 2026
    EPS:Mar 20, 2026
    EPSS Score:0.00008
    CVSS Score:8.3

    Affected Products

    Vendor
    Barebox
    Product
    Barebox
    Vendor
    Denx
    Product
    U-boot
    Vendor
    Pengutronix
    Product
    Barebox

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High