ZTE ZX297520V3 BootROM contains a vulnerability that allows arbitrary memory writes via USB.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 7, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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

• cpe zte/zx297520v3 firmwareversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-40003

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-40003

  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

  nvd.nist.gov

References

• Vendor Advisory · support.zte.com.cn