CVE-2021-45917: Sun Moon Jingyao Network Computer Terminal Protection System Firmware

Critical severity, CVSS 9.0. EPSS: 0.5% chance of exploitation in the next 30 days.

The server-request receiver function of Shockwall system has an improper authentication vulnerability. An authenticated attacker of an agent computer within the local area network can use the local registry information to launch server-side request forgery (SSRF) attack on another agent computer, resulting in arbitrary code execution for controlling the system or disrupting service.

Affected products

• Sun Moon Jingyao Network Computer Terminal Protection System Firmware: before 7.20.0401 (fixed in 7.20.0401)

Published 2022-01-03. Last modified 2026-06-17.