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 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)

• CWE-1284

• 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.pdfVendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdfVendor Advisory
• 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.pdfVendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdfVendor Advisory
• 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

Published

Nov 9, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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