{"id":"CVE-2018-4853","aliases":["EUVD-2018-16639","GHSA-hf7w-q4jc-hxp5"],"status":"published","title":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All...","description":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02267,"percentile":0.83146,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2018-07-03T14:00:00Z","modified":"2026-06-17T01:59:10Z","products":[{"vendor":"siemens","product":"siclock_tc100_firmware"},{"vendor":"siemens","product":"siclock_tc400_firmware"},{"vendor":"siemens ag","product":"siclock tc100, siclock tc400"}],"references":[{"url":"http://www.securityfocus.com/bid/104672","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-197012.pdf","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-4853"},{"url":"https://github.com/advisories/GHSA-hf7w-q4jc-hxp5"}],"sources":{"cve":[{"id":"CVE-2018-4853","description":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.","status":"published","published":"2018-07-03T14:00:00Z","modified":"2024-09-16T17:32:52.281Z","cwes":["CWE-306"],"updated_at":"2026-11-02T14:35:08.341767Z"}],"euvd":[{"id":"EUVD-2018-16639","description":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.","status":"published","published":"2018-07-03T14:00:00Z","modified":"2024-09-16T17:32:52Z","updated_at":"2026-11-03T00:55:41.41816Z"}],"ghsa":[{"id":"GHSA-hf7w-q4jc-hxp5","title":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All...","description":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.","status":"published","published":"2022-05-13T01:32:14Z","modified":"2023-02-01T05:08:12Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:50:42.317052Z"}],"nvd":[{"id":"CVE-2018-4853","description":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.","status":"published","published":"2018-07-03T14:29:00.337Z","modified":"2026-06-17T01:59:10.44Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:04:30.900603Z"}]}}