{"id":"CVE-2026-54800","state":"PUBLISHED","title":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships","description":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain unauthorized access and control over critical system functions.","publishedAt":"2026-07-09T14:15:53.306Z","updatedAt":"2026-07-09T14:45:11.451Z","severity":{"score":6.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","source":"siemens"},"assigner":"siemens","products":["Siemens CPCI85 Central Processing/Communication","Siemens SICORE Base system"],"affected":[{"vendor":"Siemens","product":"CPCI85 Central Processing/Communication","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V26.20","versionType":"custom"}]},{"vendor":"Siemens","product":"SICORE Base system","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V26.20.0","versionType":"custom"}]}],"references":["https://cert-portal.siemens.com/productcert/html/ssa-229470.html"],"weaknesses":["CWE-1188"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54800.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54800","state":"PUBLISHED","datePublished":"2026-07-09T14:15:53.306Z","dateUpdated":"2026-07-09T14:45:11.451Z","assignerShortName":"siemens","assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateReserved":"2026-06-16T07:47:12.274Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain unauthorized access and control over critical system functions."}],"affected":[{"vendor":"Siemens","product":"CPCI85 Central Processing/Communication","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V26.20","versionType":"custom"}]},{"vendor":"Siemens","product":"SICORE Base system","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V26.20.0","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-229470.html"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":4.8,"baseSeverity":"MEDIUM"}},{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","baseScore":6.3,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1188","lang":"en","description":"CWE-1188: Initialization of a Resource with an Insecure Default","type":"CWE"}]}],"providerMetadata":{"shortName":"siemens","orgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateUpdated":"2026-07-09T14:15:53.306Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T14:44:56.105030Z","id":"CVE-2026-54800","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-09T14:45:11.451Z"}}]}}}