CVE-2021-28151: Hongdian h8922 Firmware

High severity, CVSS 8.8. EPSS: 27.9% chance of exploitation in the next 30 days.

Hongdian H8922 3.0.5 devices allow OS command injection via shell metacharacters into the ip-address (aka Destination) field to the tools.cgi ping command, which is accessible with the username guest and password guest.

Affected products

• Hongdian h8922 Firmware: version 3.0.5 only

Published 2021-05-06. Last modified 2026-06-17.