What’s Vulnerable › Vulnerabilities
CVE-2026-40003: USB-based arbitrary memory write vulnerability in ZTE ZX297520V3 soc BootROM
- Severity: medium (CVSS 6.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-07 · updated 2026-10-26
- Weakness: CWE-787
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.
Affected products
- ZTE ZX297520V3 BootROM: all versions
References
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