CVE-2021-31344

Published: Nov 9, 2021Modified: Jun 17, 2026

6.9

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: productcert@siemens.com (Secondary)

Description

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)

Affected (11)

Products: Siemens: Capital Vstar, Nucleus Net, Nucleus Readystart V3, Nucleus Readystart V4, Nucleus Source Code, Apogee Modular Building Controller Firmware, Apogee Modular Equiment Controller Firmware, Apogee Pxc Compact Firmware, Apogee Pxc Modular Firmware, Talon Tc Compact Firmware, Talon Tc Modular Firmware

Siemens

11 products

Capital Vstar

Nucleus Net

Nucleus Readystart V3

Nucleus Readystart V4

Nucleus Source Code

Apogee Modular Building Controller Firmware

Apogee Modular Equiment Controller Firmware

Apogee Pxc Compact Firmware

Apogee Pxc Modular Firmware

Talon Tc Compact Firmware

Talon Tc Modular Firmware

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Siemens Capital Vstar	All versions
Siemens Nucleus Net	All versions
Siemens Nucleus Readystart V3	Before 2017.02.1
Siemens Nucleus Readystart V4	Before 4.1.1
Siemens Nucleus Source Code	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Siemens Apogee Modular Building Controller Firmware	All versions

Running on/with	Platform Versions
Siemens Apogee Modular Building Controller	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Siemens Apogee Modular Equiment Controller Firmware	All versions

Running on/with	Platform Versions
Siemens Apogee Modular Equiment Controller	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Siemens Apogee Pxc Compact Firmware	All versions

Running on/with	Platform Versions
Siemens Apogee Pxc Compact	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Siemens Apogee Pxc Modular Firmware	All versions

Running on/with	Platform Versions
Siemens Apogee Pxc Modular	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Siemens Talon Tc Compact Firmware	All versions

Running on/with	Platform Versions
Siemens Talon Tc Compact	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Siemens Talon Tc Modular Firmware	All versions

Running on/with	Platform Versions
Siemens Talon Tc Modular	All versions

Related CWEs

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.