{"id":"CVE-2025-3449","aliases":["EUVD-2025-31915","GHSA-6rgw-qfm8-jfvg"],"status":"published","title":"Weak Session Token used in Automation Runtime SDM","description":"A Generation of Predictable Numbers or Identifiers vulnerability in the SDM component of B\u0026R Automation Runtime versions before 6.4 may allow an unauthenticated network-based attacker to take over already established sessions.","severity":{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0019,"percentile":0.08729,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-340"],"published":"2025-10-07T18:21:32Z","modified":"2026-10-08T22:10:00Z","products":[{"vendor":"b\u0026r industrial automation gmbh","product":"automation runtime"}],"references":[{"url":"https://www.br-automation.com/fileadmin/SA25P003-178b6a20.pdf"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3449"},{"url":"https://github.com/advisories/GHSA-6rgw-qfm8-jfvg"}],"sources":{"cve":[{"id":"CVE-2025-3449","title":"Weak Session Token used in Automation Runtime SDM","description":"A Generation of Predictable Numbers or Identifiers vulnerability in the SDM component of B\u0026R Automation Runtime versions before 6.4 may allow an unauthenticated network-based attacker to take over already established sessions.","status":"published","published":"2025-10-07T18:21:32.231Z","modified":"2025-10-08T13:15:41.649Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T14:32:39.719629Z"}],"euvd":[{"id":"EUVD-2025-31915","description":"A Generation of Predictable Numbers or Identifiers vulnerability in the SDM component of B\u0026R Automation Runtime versions before 6.4 may allow an unauthenticated network-based attacker to take over already established sessions.","status":"published","published":"2025-10-07T18:21:32Z","modified":"2025-10-08T13:15:41Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T20:31:35.432127Z"}],"ghsa":[{"id":"GHSA-6rgw-qfm8-jfvg","title":"Generation of Predictable Numbers or Identifiers vulnerability in B\u0026R Industrial Automation...","description":"Generation of Predictable Numbers or Identifiers vulnerability in B\u0026R Industrial Automation Automation Runtime.This issue affects Automation Runtime: from 6.0 before 6.4.","status":"published","published":"2025-10-07T21:31:05Z","modified":"2025-10-07T21:31:14Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/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":"low"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T15:03:52.918407Z"}],"nvd":[{"id":"CVE-2025-3449","description":"A Generation of Predictable Numbers or Identifiers vulnerability in the SDM component of B\u0026R Automation Runtime versions before 6.4 may allow an unauthenticated network-based attacker to take over already established sessions.","status":"published","published":"2025-10-07T19:15:36.62Z","modified":"2026-10-08T22:10:00.563Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/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":"low","assessor":"secondary"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-340"],"updated_at":"2026-11-02T14:11:35.93863Z"}]}}