{"id":"CVE-2026-54799","aliases":["EUVD-2026-42594","GHSA-j26p-j946-5hv2"],"status":"published","title":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c...","description":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c V26.20), SICORE Base system (All versions \u003c V26.20.0). The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.","severity":{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00183,"percentile":0.08013,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-489"],"published":"2026-07-09T14:15:52Z","modified":"2026-10-24T13:10:00Z","products":[{"vendor":"siemens","product":"cpci85 central processing/communication"},{"vendor":"siemens","product":"sicore base system"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-229470.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54799"},{"url":"https://github.com/advisories/GHSA-j26p-j946-5hv2"}],"sources":{"cve":[{"id":"CVE-2026-54799","description":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c V26.20), SICORE Base system (All versions \u003c V26.20.0). The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.","status":"published","published":"2026-07-09T14:15:52.247Z","modified":"2026-07-09T14:46:38.615Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-489"],"updated_at":"2026-11-02T13:38:09.774038Z"}],"euvd":[{"id":"EUVD-2026-42594","description":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c V26.20), SICORE Base system (All versions \u003c V26.20.0). The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.","status":"published","published":"2026-07-09T14:15:52Z","modified":"2026-07-09T14:46:38Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:20:04.126011Z"}],"ghsa":[{"id":"GHSA-j26p-j946-5hv2","title":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c...","description":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c V26.20), SICORE Base system (All versions \u003c V26.20.0). The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.","status":"published","published":"2026-07-09T15:32:35Z","modified":"2026-07-09T15:32:41Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-489"],"updated_at":"2026-11-02T15:09:21.623271Z"}],"nvd":[{"id":"CVE-2026-54799","description":"A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions \u003c V26.20), SICORE Base system (All versions \u003c V26.20.0). The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.","status":"published","published":"2026-07-09T15:16:36.58Z","modified":"2026-10-24T13:10:00.147Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-489"],"updated_at":"2026-11-02T14:12:28.4135Z"}]}}