AMD Zynq UltraScale+ MPSoC/ RFSoC DFU Buffer Overflow in USB Boot Mode
CVE-2026-0461 Published on October 5, 2026

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.

NVD

Vulnerability Analysis

CVE-2026-0461 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2026-0461 has been classified to as a Memory Corruption vulnerability or weakness.


Affected Versions

AMD Zynq™ UltraScale+ MPSoCs: AMD Zynq™ UltraScale+ RFSoCs: AMD Kria SOMs: