---
id: CVE-2026-0461
title: >-
  Insufficient boundary validation in the USB boot mode implementation of AMD
  Zynq™ UltraScale+ MPSoC and RFSoC devices could allow unbounded Device
  Firmware Upgrade (DFU) download requests to overflow the DDR receive buffer
  into FSBL memo…
summary: >-
  Insufficient boundary validation in the USB boot mode implementation of AMD
  Zynq™ UltraScale+ MPSoC and RFSoC devices could allow unbounded Device
  Firmware Upgrade (DFU) download requests to overflow the DDR receive buffer
  into FSBL memo…
severity: high
cvss: 7.5
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-787
vendor: AMD
product: Zynq™ UltraScale+ MPSoCs
affected:
  - zynq_ultrascale+_mpsocs (all versions)
  - zynq_ultrascale+_rfsocs (all versions)
  - kria_soms (all versions)
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T22:16:55.280'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-0461'
references:
  - url: >-
      https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-8029.html
    label: psirt@amd.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-05T22:35:24.733Z'
---

## Overview

Insufficient boundary validation in the USB boot mode implementation of AMD Zynq™ UltraScale+ MPSoC and RFSoC devices could allow unbounded Device Firmware Upgrade (DFU) download requests to overflow the DDR receive buffer into FSBL memory, potentially resulting in unauthorized code execution during the boot process. This issue could impact the confidentiality, integrity, or availability of affected system.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.