CVE-2021-33720

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-120

Affected software

No affected versions have been published.

Timeline

Published
Sep 14, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-33720: High severity, CVSS 7.5 | Vulnix