CVE-2026-40003 — USB-based arbitrary memory write vulnerability in ZTE ZX297520V3 soc BootROM

CVE-2026-40003

USB-based arbitrary memory write vulnerability in ZTE ZX297520V3 soc BootROM PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
ZTE / ZX297520V3 BootROM	affected 7520V3 chip

CWE

CWE-787

References

https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/2144487415169560645

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.