CVE-2021-37740
7.5 · HIGHOverview
CVE-2021-37740 is a high-severity vulnerability affecting mdt scn-ip000.03_firmware. It was published on April 20, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from mdt. Update scn-ip000.03_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mdt | scn-ip000.03_firmware | >= 0, < 3.0.4 | Affected |
| mdt | scn-ip100.03_firmware | >= 0, < 3.0.4 | Affected |
References
Frequently Asked Questions
What is CVE-2021-37740?
CVE-2021-37740 is a high-severity vulnerability affecting mdt scn-ip000.03_firmware. It was published on April 20, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-37740?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-37740?
Check the references section for vendor advisories and patches from mdt. Update scn-ip000.03_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-37740?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-37740 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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