Cyber Resilience

CVE-2021-37740

HighPublic PoC

Published: 20 April 2022

Published
20 April 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.1997 95.6th percentile
Risk Priority 27 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-37740 is a high-severity an unspecified weakness vulnerability in Mdt Scn-Ip000.03 Firmware. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 4.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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,…

more

until the device is rebooted, via a SESSION_REQUEST frame with a modified total length field.

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

mdt
scn-ip000.03 firmware
≤ 3.0.4
mdt
scn-ip100.03 firmware
≤ 3.0.4

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References