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Vulnerabilities CVE-2026-40003

CVE-2026-40003

Medium
Open
TLP:CLEAR
NVD CVE.org
Critical Infrastructure

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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.

Details

CVSS Score
5.1
EPSS Score
0.30%

22th percentile

CVSS Vector
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L
Confidence
90%
Published
May 7, 2026
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