{"id":"CVE-2016-3949","aliases":["EUVD-2016-4961","GHSA-xx3r-7m7h-68q2"],"status":"published","title":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7...","description":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.","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":"2026-11-08","score":0.04492,"percentile":0.91547,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2016-06-27T10:00:00Z","modified":"2026-06-17T00:46:37Z","products":[{"vendor":"siemens","product":"simatic_s7-300_with_profitnet_support_firmware"},{"vendor":"siemens","product":"simatic_s7-300_without_profitnet_support_firmware"}],"references":[{"url":"http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1036089","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","US Government Resource"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-818183.pdf","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-3949"},{"url":"https://github.com/advisories/GHSA-xx3r-7m7h-68q2"}],"sources":{"cve":[{"id":"CVE-2016-3949","description":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.","status":"published","published":"2016-06-27T10:00:00Z","modified":"2024-08-06T00:10:31.918Z","updated_at":"2026-11-02T14:33:33.758954Z"}],"euvd":[{"id":"EUVD-2016-4961","description":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.","status":"published","published":"2016-06-27T10:00:00Z","modified":"2024-08-06T00:10:31Z","updated_at":"2026-11-03T02:22:48.690835Z"}],"ghsa":[{"id":"GHSA-xx3r-7m7h-68q2","title":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7...","description":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.","status":"published","published":"2022-05-13T01:28:32Z","modified":"2023-02-01T05:08:02Z","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"}],"updated_at":"2026-11-02T14:50:40.02829Z"}],"nvd":[{"id":"CVE-2016-3949","description":"Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.","status":"published","published":"2016-06-27T10:59:06.58Z","modified":"2026-06-17T00:46:37.24Z","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":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:03:26.642445Z"}]}}