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Case File

CVE-2021-33719

CRITICAL · CVSS 9.8 EPSS 2.16% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-14 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-33719
Severity
CRITICAL
CVSS
9.8
EPSS
2.16%

Original NVD 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 or potential remote code execution.

Related CVEs

Other vulnerabilities affecting the same vendor(s)