CVE-2018-20720: Hitachienergy Relion 630 Firmware

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

ABB Relion 630 devices 1.1 before 1.1.0.C0, 1.2 before 1.2.0.B3, and 1.3 before 1.3.0.A6 allow remote attackers to cause a denial of service (reboot) via a reboot command in an SPA message.

Affected products

• Hitachienergy Relion 630 Firmware: from 1.1.0, before 1.1.0.c0 (fixed in 1.1.0.c0); from 1.2.0, before 1.2.0.b3 (fixed in 1.2.0.b3); from 1.3.0, before 1.3.0.a6 (fixed in 1.3.0.a6)

Published 2019-01-16. Last modified 2026-06-17.