{"id":"CVE-2021-31344","state":"PUBLISHED","title":"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 versi","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). ICMP echo packets with fake IP options allow sending ICMP echo reply messages to arbitrary hosts on the network. (FSMD-2021-0004)","publishedAt":"2021-11-09T11:31:51.000Z","updatedAt":"2025-03-11T09:47:36.591Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"siemens"},"assigner":"siemens","products":["Siemens Capital Embedded AR Classic 431-422","Siemens Capital Embedded AR Classic R20-11","Siemens PLUSCONTROL 1st Gen","Siemens SIMOTICS CONNECT 400"],"affected":[{"vendor":"Siemens","product":"Capital Embedded AR Classic 431-422","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"Capital Embedded AR Classic R20-11","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V2303","versionType":"custom"}]},{"vendor":"Siemens","product":"PLUSCONTROL 1st Gen","defaultStatus":"unknown","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SIMOTICS CONNECT 400","defaultStatus":"unknown","versions":[{"version":"All versions < V0.5.0.0","status":"affected"}]},{"vendor":"Siemens","product":"SIMOTICS CONNECT 400","defaultStatus":"unknown","versions":[{"version":"All versions < V1.0.0.0","status":"affected"}]}],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf","https://cert-portal.siemens.com/productcert/pdf/ssa-044112.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-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"],"weaknesses":["CWE-843"],"ingestedAt":"2026-10-29T19:48:30.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/31xxx/CVE-2021-31344.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-31344","state":"PUBLISHED","datePublished":"2021-11-09T11:31:51.000Z","dateUpdated":"2025-03-11T09:47:36.591Z","assignerShortName":"siemens","assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateReserved":"2021-04-15T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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. 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