PT-2026-38322 · Zte · Zx297520V3 Bootrom

Rva3 · Published 2026-05-07 · Updated 2026-05-07 · CVE-2026-40003

Mitre

CVSS v3.1

5.1

Medium

Base vector

AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L

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.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-40003

Affected Products

Zx297520V3 Bootrom

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-40003 · Security Note
• https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/2144487415169560645 · Note