{"id":"CVE-2026-22924","aliases":["EUVD-2026-29423","GHSA-9p8h-826j-wp3r"],"status":"published","title":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected...","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions.\r\nThis could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.","severity":{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.003,"percentile":0.22937,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-05-12T08:20:55Z","modified":"2026-10-26T18:10:00Z","products":[{"vendor":"siemens","product":"simatic cn 4100"},{"vendor":"siemens","product":"simatic_cn_4100_firmware"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-032379.html","tags":["Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22924"},{"url":"https://github.com/advisories/GHSA-9p8h-826j-wp3r"}],"sources":{"cve":[{"id":"CVE-2026-22924","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions.\r\nThis could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.","status":"published","published":"2026-05-12T08:20:55.135Z","modified":"2026-05-13T09:51:24.816Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T13:39:05.585774Z"}],"euvd":[{"id":"EUVD-2026-29423","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions.\r\nThis could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.","status":"published","published":"2026-05-12T08:20:55Z","modified":"2026-05-13T09:51:24Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:04:34.771814Z"}],"ghsa":[{"id":"GHSA-9p8h-826j-wp3r","title":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected...","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions.\nThis could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.","status":"published","published":"2026-05-12T12:32:14Z","modified":"2026-05-12T12:32:14Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:08:01.880471Z"}],"nvd":[{"id":"CVE-2026-22924","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions.\r\nThis could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.","status":"published","published":"2026-05-12T10:16:43.917Z","modified":"2026-10-26T18:10:00.173Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:18.613259Z"}]}}