Vulnerability in Siemens Apogee Modular Building Controller

CVE-2021-31344

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions < V1.0.0.0). ICMP echo packets with fake IP options allow sending ICMP echo reply messages to arbitrary hosts on the network. (FSMD-2021-0004)

EPSS: 0.015 (71.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-31344?
CVE-2021-31344 is a medium-severity vulnerability in Siemens Apogee Modular Building Controller, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 5.3/10. Published 2021-11-09.
How severe is CVE-2021-31344?
Medium severity. CVSS v3 base score is 5.3 out of 10.