CVE-2026-40003
MEDIUM
NVD
CVSS Score
5.1
Severity
MEDIUM
Published
May 07, 2026
Vendor
unknown
Description
ZTE ZX297520V3 BootROM contains a vulnerability that allows arbitrary memory writes via USB. Attackers can exploit the lack of target address validation in the USB download mode to write data to any location in BootROM runtime memory, thereby overwriting the stack, hijacking the execution flow, bypassing the Secure Boot signature verification mechanism, and achieving unauthorized code execution.