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Vulnerability record · CVE-2026-46728 · published 16 May 2026

CVE-2026-46728: Denx u-boot origin validation error vulnerability

Denx · U Boot

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

8.8 CVSS 3.1 High EPSS 0.13% · top 97.7% CWE-346 · Origin validation error
8.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
11 Sep 2026Last modified by NVD

Description

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/barebox/barebox/security/advisories/GHSA-3fvj-q26p-j6h4 ExploitPatchVendor Advisory
https://github.com/u-boot/u-boot/commit/2092322b31cc8b1f8c9e2e238d1043ae0637b241 Patch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-34835Denx u-boot out-of-bounds write vulnerabilityIn Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the corrupti…EPSS 2.2%9.8CVE-2022-30767Denx u-boot classic buffer overflow vulnerabilitynfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, leading to …EPSS 2.7%9.8CVE-2020-8432Denx u-boot double free vulnerabilityIn Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double freeing may result in a write-wha…EPSS 3.1%9.8CVE-2019-14204Denx u-boot out-of-bounds write vulnerabilityAn issue was discovered in Das U-Boot through 2019.07. There is a stack-based buffer overflow in this nfs_handler reply helper function: nfs_umountal…EPSS 2.7%9.8CVE-2019-14192Denx u-boot out-of-bounds write vulnerabilityAn issue was discovered in Das U-Boot through 2019.07. There is an unbounded memcpy when parsing a UDP packet due to a net_process_received_packet in…EPSS 2.8%9.8CVE-2019-14193Denx u-boot out-of-bounds write vulnerabilityAn issue was discovered in Das U-Boot through 2019.07. There is an unbounded memcpy with an unvalidated length at nfs_readlink_reply, in the "if" blo…EPSS 2.6%9.8CVE-2019-14194Denx u-boot out-of-bounds write vulnerabilityAn issue was discovered in Das U-Boot through 2019.07. There is an unbounded memcpy with a failed length check at nfs_read_reply when calling store_b…EPSS 2.4%9.8CVE-2019-14195Denx u-boot out-of-bounds write vulnerabilityAn issue was discovered in Das U-Boot through 2019.07. There is an unbounded memcpy with unvalidated length at nfs_readlink_reply in the "else" block…EPSS 2.5%

Source: NIST National Vulnerability Database (record CVE-2026-46728), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.