{"id":"CVE-2026-62646","aliases":["EUVD-2026-72661","GHSA-5w7q-mmr4-39pj"],"status":"published","title":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier...","description":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication.","severity":{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00509,"percentile":0.43934,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-331"],"published":"2026-09-08T08:11:23Z","modified":"2026-09-10T19:17:31Z","products":[{"vendor":"siemens","product":"reyrolle 7sr5"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-142885.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62646"},{"url":"https://github.com/advisories/GHSA-5w7q-mmr4-39pj"}],"sources":{"cve":[{"id":"CVE-2026-62646","description":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication.","status":"published","published":"2026-09-08T08:11:23.739Z","modified":"2026-09-10T18:19:25.743Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:20:14.665567Z"}],"euvd":[{"id":"EUVD-2026-72661","description":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication.","status":"published","published":"2026-09-08T08:11:23Z","modified":"2026-09-10T18:19:25Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:28:23.831795Z"}],"ghsa":[{"id":"GHSA-5w7q-mmr4-39pj","title":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier...","description":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication.","status":"published","published":"2026-09-08T09:35:38Z","modified":"2026-09-08T09:35:45Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/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":"critical"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T15:11:27.823827Z"}],"nvd":[{"id":"CVE-2026-62646","description":"A vulnerability has been identified in Reyrolle 7SR5 (All versions \u003c V2.70). A session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication.","status":"published","published":"2026-09-08T09:18:16.71Z","modified":"2026-09-10T19:17:31.797Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/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":"critical","assessor":"secondary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:12:44.436435Z"}]}}