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CVE-2026-40003

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CVE-2026-40003

Published: May 7, 2026

Modified: May 19, 2026

PUBLISHED

CVSS v3.1

5.1

MEDIUM

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.

VendorProductVersions

ZTE

ZX297520V3 BootROM

affected
7520V3 chip

Weaknesses (CWE)

CWE-787

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

Low

References

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