{"id":"CVE-2017-9938","aliases":["EUVD-2017-18848","GHSA-gr6m-h2q8-p89j"],"status":"published","title":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could...","description":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could allow specially crafted packets sent to the SIMATIC Logon Remote Access service on port 16389/tcp to cause a Denial-of-Service condition. The service restarts automatically.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02897,"percentile":0.87017,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-787"],"published":"2017-08-08T00:00:00Z","modified":"2026-06-17T01:29:14Z","products":[{"vendor":"siemens","product":"simatic_logon"}],"references":[{"url":"http://www.securityfocus.com/bid/99539","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.tenable.com/security/research/tra-2017-34","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-804859.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-9938"},{"url":"https://github.com/advisories/GHSA-gr6m-h2q8-p89j"}],"sources":{"cve":[{"id":"CVE-2017-9938","description":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could allow specially crafted packets sent to the SIMATIC Logon Remote Access service on port 16389/tcp to cause a Denial-of-Service condition. The service restarts automatically.","status":"published","published":"2017-08-08T00:00:00Z","modified":"2024-08-05T17:25:00.568Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:13.96587Z"}],"euvd":[{"id":"EUVD-2017-18848","description":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could allow specially crafted packets sent to the SIMATIC Logon Remote Access service on port 16389/tcp to cause a Denial-of-Service condition. The service restarts automatically.","status":"published","published":"2017-08-08T00:00:00Z","modified":"2024-08-05T17:25:00Z","updated_at":"2026-11-03T02:23:26.143318Z"}],"ghsa":[{"id":"GHSA-gr6m-h2q8-p89j","title":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could...","description":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could allow specially crafted packets sent to the SIMATIC Logon Remote Access service on port 16389/tcp to cause a Denial-of-Service condition. The service restarts automatically.","status":"published","published":"2022-05-17T00:22:01Z","modified":"2025-04-20T03:43:28Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20","CWE-787"],"updated_at":"2026-11-02T15:01:50.574323Z"}],"nvd":[{"id":"CVE-2017-9938","description":"A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could allow specially crafted packets sent to the SIMATIC Logon Remote Access service on port 16389/tcp to cause a Denial-of-Service condition. The service restarts automatically.","status":"published","published":"2017-08-08T00:29:00.353Z","modified":"2026-06-17T01:29:14.9Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787","CWE-20"],"updated_at":"2026-11-02T14:03:57.282351Z"}]}}