CVE-2021-37740
CVSS v3
7.5
HIGH
EPSS Score
20.0 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2022-04-20
Frequently asked questions
What is CVE-2021-37740?
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.
Is CVE-2021-37740 actively exploited?
Active exploitation of CVE-2021-37740 has not been confirmed. The EPSS score is 20.0%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-37740?
CVE-2021-37740 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-37740 affecting your environment?
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