CVE-2026-40003: medium-severity vulnerability in ZTE ZX297520V3 BootROM
USB-based arbitrary memory write vulnerability in ZTE ZX297520V3 soc BootROM
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.1epss 0.3%
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.
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L
Affected products
ZTE · ZX297520V3 BootROM