CVE-2026-33243barebox is a bootloader.
Updated under an hour ago ()
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It affects pengutronix barebox. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.2 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-345
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Sep 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
pengutronix barebox pengutronix:barebox | from 2016.03.0 before 2025.09.3; from 2025.10.0 before 2026.03.1 | NVD |
References
- https://github.com/barebox/barebox/commit/aca01795056d51060cb096f9a1ea309361743e05patch
- https://github.com/barebox/barebox/security/advisories/GHSA-3fvj-q26p-j6h4patch, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.