{"id":"CVE-2025-35021","aliases":["EUVD-2025-37731","GHSA-6f2r-5p58-wvrf"],"status":"published","title":"Abilis CPX Fallback Shell Connection Relay","description":"By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00328,"percentile":0.26286,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1188"],"published":"2025-11-04T00:23:23Z","modified":"2026-10-18T21:10:00Z","products":[{"vendor":"abilis","product":"cpx"},{"vendor":"antek","product":"abilis_cpx_firmware"}],"references":[{"url":"https://www.runzero.com/advisories/abilis-cpx-authentication-bypass-cve-2025-35021/","tags":["technical-description","third-party-advisory","Exploit","Mitigation","Third Party Advisory"]},{"url":"https://takeonme.org/gcves/GCVE-1337-2025-00000000000000000000000000000000000000000000000001011111111111011111111110000000000000000000000000000000000000000000000000000000100","tags":["technical-description","third-party-advisory","Exploit","Mitigation","Third Party Advisory"]},{"url":"https://support.abilis.net/relnotes/cpx2k/R9.0.html#R9.0.7","tags":["vendor-advisory","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-35021"},{"url":"https://takeonme.org/cves/cve-2025-35021"},{"url":"https://www.runzero.com/advisories/abilis-cpx-authentication-bypass-cve-2025-35021"},{"url":"https://github.com/advisories/GHSA-6f2r-5p58-wvrf"}],"sources":{"cve":[{"id":"CVE-2025-35021","title":"Abilis CPX Fallback Shell Connection Relay","description":"By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.","status":"published","published":"2025-11-04T00:23:23.924Z","modified":"2025-11-05T14:54:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:32:51.199669Z"}],"euvd":[{"id":"EUVD-2025-37731","description":"By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.","status":"published","published":"2025-11-04T00:23:23Z","modified":"2025-11-05T14:54:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:49:20.323605Z"}],"ghsa":[{"id":"GHSA-6f2r-5p58-wvrf","title":"By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker...","description":"By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.","status":"published","published":"2025-11-04T03:30:26Z","modified":"2025-11-04T15:32:35Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T15:04:32.843339Z"}],"nvd":[{"id":"CVE-2025-35021","description":"By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.","status":"published","published":"2025-11-04T01:15:33.107Z","modified":"2026-10-18T21:10:00.12Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:11:41.607433Z"}]}}