CVE-2021-31344

Siemens · published 2021-11-09

Source record Collected from the National Vulnerability Database (NVD)

Description

Description by Siemens AG via the CVE Program.

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)

Status at the source

NVD status: Modified

Affected products, as the source lists them

Vendor	Product	Versions
Siemens	Capital Embedded AR Classic 431-422	0 – before *: affected
Siemens	Capital Embedded AR Classic R20-11	0 – before V2303: affected
Siemens	PLUSCONTROL 1st Gen	All versions: affected
Siemens	SIMOTICS CONNECT 400	All versions < V0.5.0.0: affected
Siemens	SIMOTICS CONNECT 400	All versions < V1.0.0.0: affected

Products named in NVD's CPE match criteria (11)

cpe:2.3:a:siemens:capital_vstar:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:nucleus_readystart_v4:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:nucleus_source_code:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_modular_building_controller_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_modular_equiment_controller_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_pxc_compact_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_pxc_modular_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:talon_tc_compact_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:talon_tc_modular_firmware:*:*:*:*:*:*:*:*

DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.

Scores, as their sources published them

CVSS 4.0: 6.9 MEDIUM — as published by Siemens AG (Secondary)
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 3.1: 5.3 MEDIUM — as published by Siemens AG (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 3.1: 5.3 MEDIUM — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0: 5 MEDIUM — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:N/I:P/A:N

DeSpy does not score records. These are the sources' own values.

Weaknesses

CWE-843

Sources

References the source lists

Source dates: published 2021-11-09, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.

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