01 Record

CVE-2021-31346

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

HighPUBLISHEDCNA: siemens

CNA base score8.2 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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02 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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 1.97% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 79.0% of scored records. A rank, not a probability.
NVD base score: 9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2021-11-09 11:31Z4 YR AGO

Last updated

2025-03-11 09:47Z1 YR AGO

Reserved

2021-04-15

Assigning CNA

siemens

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Weaknesses

CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.1

Document digest

e60d9150d7cc9ae8fa8b34e5d14325b355d536230bd509ce840ef2b33cf75d05

05 Affected products

VendorProductVersionsPlatforms

SiemensCapital Embedded AR Classic 431-4220 to < *—

SiemensCapital Embedded AR Classic R20-110 to < V2303—

SiemensPLUSCONTROL 1st GenAll versions—

SiemensSIMOTICS CONNECT 400All versions < V0.5.0.0, All versions < V1.0.0.0—

06 References

cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdfx_refsource_MISC
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdfx_refsource_MISC
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdfx_refsource_MISC
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-845392.pdfx_refsource_MISC
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-223353.pdfx_refsource_MISC
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-114589.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-044112.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-620288.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-845392.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-223353.html

01 Record index

CVE-2021-31346

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-31346

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References