AUGUST 4, 2026
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Case File

CVE-2021-37740

HIGH · CVSS 7.5 EPSS 4.51% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-04-20 · 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.

GitHub PoC Links
github.com ↗

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

CVE
CVE-2021-37740
Severity
HIGH
CVSS
7.5
EPSS
4.51%

Original NVD Description

A denial of service vulnerability exists in MDT's firmware for the KNXnet/IP Secure router SCN-IP100.03 and KNX IP interface SCN-IP000.03 before v3.0.4, that allows a remote attacker to turn the device unresponsive to all requests on the KNXnet/IP Secure layer, until the device is rebooted, via a SESSION_REQUEST frame with a modified total length field.