title: Secheron SEPCOS Control and Protection Relay
description: Weak default root user credentials allow remote attackers to easily obtain OS superuser privileges over the open TCP port for SSH.
problem types: CWE-521 Weak Password Requirements
affected:
{
product: SEPCOS Control and Protection Relay firmware package
vendor: Secheron
versions:
changes: [at: 1.24.8, status: unaffected], lessThan: 1.23.21, status: affected, version: All versions, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
solutions: Secheron recommends updating its software to the latest version:
SEPCOS Single Package firmware (1.23.xx feature level): Update to 1.23.22 or higher version
SEPCOS Single Package firmware (1.24.xx feature level): Update to 1.24.8 or higher version
SEPCOS Single Package firmware (1.25.xx feature level): Update to 1.25.3 or higher version
workarounds: Additional workarounds are suggested to help reduce the risk:
Configure the network such that PLC communications are strictly limited to only the devices required to perform its functions.
Limit remote access and close Ports 80 and 443 at the switch level.
Only use approved devices to connect to the PLCs. Do not connect personal peripherals (USB sticks, hotspots) to approved devices.
Check device logs during periodic maintenance for unauthorized changes or access.