SIPROTEC 5 Relays CPU Vulnerability: Denial-of-Service and Remote Code Execution

SIPROTEC 5 Relays CPU Vulnerability: Denial-of-Service and Remote Code Execution

CVE-2021-33719 · CRITICAL Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition or potential remote code execution.

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