{"id":"CVE-2026-8979","aliases":["EUVD-2026-32896","GHSA-m7v3-p7g2-xh6x"],"status":"published","title":"Authentication Bypass","description":"The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00784,"percentile":0.56319,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-05-28T13:05:40Z","modified":"2026-10-26T11:10:00Z","products":[{"vendor":"mennekes","product":"amtron"}],"references":[{"url":"https://cyberdanube.com/security-research/multiple-vulnerabilities-in-mennekes-amtron-series/","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8979"},{"url":"https://cyberdanube.com/security-research/multiple-vulnerabilities-in-mennekes-amtron-series"},{"url":"https://github.com/advisories/GHSA-m7v3-p7g2-xh6x"}],"sources":{"cve":[{"id":"CVE-2026-8979","title":"Authentication Bypass","description":"The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.","status":"published","published":"2026-05-28T13:05:40.423Z","modified":"2026-05-28T14:21:33.159Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","level":"critical","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:48:13.398044Z"}],"euvd":[{"id":"EUVD-2026-32896","description":"The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.","status":"published","published":"2026-05-28T13:05:40Z","modified":"2026-05-28T14:21:33Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","level":"critical"}],"updated_at":"2026-11-02T18:21:02.581093Z"}],"ghsa":[{"id":"GHSA-m7v3-p7g2-xh6x","title":"The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass...","description":"The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.","status":"published","published":"2026-05-28T15:39:50Z","modified":"2026-05-28T15:39:56Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:08:21.544183Z"}],"nvd":[{"id":"CVE-2026-8979","description":"The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.","status":"published","published":"2026-05-28T14:16:24.91Z","modified":"2026-10-26T11:10:00.157Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:21.244426Z"}]}}