CVE-2026-0461

USB Boot Mode Buffer Overflow in AMD Zynq UltraScale+ MPSoCs and RFSoCs

Published Oct 5, 2026 CVSS 4.0 · 7.5 High EPSS < 1% KEV · Not listed
Description
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Amd
Amd kria Som
Amd zynq Ultrascale+
Vendors & Products Amd
Amd kria Som
Amd zynq Ultrascale+
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title USB Boot Mode Buffer Overflow in AMD Zynq UltraScale+ MPSoCs and RFSoCs
Type Values Removed Values Added
Description 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.
Weaknesses CWE-787
References
Metrics cvssV4_0

{'score': 7.5, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
AMD
Published
Updated
Oct 6, 2026, 1:49 PM
Reserved
Dec 6, 2025, 3:11 PM
Status
Awaiting Analysis
Published
Oct 5, 2026, 10:16 PM
Modified
Oct 6, 2026, 4:00 PM