What is CVE-2026-46728?

CVE-2026-46728 is a high-severity vulnerability in Denx U-Boot, classified under Origin Validation Error. CVSS score: 8.2/10. Published 2026-05-16.

How severe is CVE-2026-46728?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Denx U-Boot

CVE-2026-46728

Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.

Published 2026-05-16 · last modified 2026-09-11.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.5th percentile), scored 2026-10-21.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.001 · change: -0.001

Affected products

Denx U-Boot — versions 0, 2026.04
Pengutronix Barebox

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

github.com/barebox/barebox/security/advisories/GHSA-3fvj-q26p-j6h4 (Exploit, Patch, Vendor Advisory)
github.com/u-boot/u-boot/commit/2092322b31cc8b1f8c9e2e238d1043ae0637b241 (Patch)

Frequently asked questions

What is CVE-2026-46728?: CVE-2026-46728 is a high-severity vulnerability in Denx U-Boot, classified under Origin Validation Error. CVSS score: 8.2/10. Published 2026-05-16.
How severe is CVE-2026-46728?: High severity. CVSS v3 base score is 8.2 out of 10.