CVE-2021-31890
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). The total length of an TCP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on the network buffer organization in memory. (FSMD-2021-0017)
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 3.1: 7.5 HIGH — as published by Siemens AG (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1: 9.1 CRITICAL — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - CVSS 2.0: 6.4 MEDIUM — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:P/I:N/A:P
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://cert-portal.siemens.com/productcert/html/ssa-044112.html
- https://cert-portal.siemens.com/productcert/html/ssa-114589.html
- https://cert-portal.siemens.com/productcert/html/ssa-223353.html
- https://cert-portal.siemens.com/productcert/html/ssa-620288.html
- https://cert-portal.siemens.com/productcert/html/ssa-845392.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-223353.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-845392.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-223353.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-845392.pdf
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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