CVE-2021-31346

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). The total length of an ICMP 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-2021-0007)

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.97% Top 25%
Vendor Advisory siemens.com Vendor Advisory siemens.com
Affected: Siemens Capital Embedded AR Classic 431-422
Affected: Siemens Capital Embedded AR Classic R20-11
Affected: Siemens PLUSCONTROL 1st Gen
Affected: Siemens SIMOTICS CONNECT 400
Affected: Siemens SIMOTICS CONNECT 400
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf vendor advisory
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-223353.pdf
https://cert-portal.siemens.com/productcert/html/ssa-114589.html
https://cert-portal.siemens.com/productcert/html/ssa-044112.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/html/ssa-223353.html

Frequently Asked Questions

What is the severity of CVE-2021-31346?
CVE-2021-31346 has been scored as a high severity vulnerability.
How to fix CVE-2021-31346?
To fix CVE-2021-31346, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31346 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31346 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31346?
CVE-2021-31346 affects Siemens Capital Embedded AR Classic 431-422, Siemens Capital Embedded AR Classic R20-11, Siemens PLUSCONTROL 1st Gen, Siemens SIMOTICS CONNECT 400, Siemens SIMOTICS CONNECT 400.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.