{"id":"CVE-2026-129116","summary":"C-Kermit 7.0.197 before 11.1.515 IKSD Authentication Bypass via Refused Certificate Login","details":"C-Kermit from 7.0.197 before 11.1.515 contains an authentication bypass vulnerability in the IKSD SSL build that leaves Telnet authentication state at AUTH_VALID after a refused certificate login. Attackers holding a trusted certificate mapped to a refused account can log in as any other account with any password, gaining that account's shell access.","aliases":["CVE-2026-129117","CVE-2026-129118","GHSA-5pc4-gh6q-5h4w"],"modified":"2026-11-14T02:56:11.265042836Z","published":"2026-11-13T16:23:48.764Z","database_specific":{"cwe_ids":["CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/129xxx/CVE-2026-129116.json","unresolved_ranges":[{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"7.0.197"},{"fixed":"11.1.515"}]}]},{"extracted_events":[{"source":"DESCRIPTION","range":[{"introduced":"7.0.197"},{"fixed":"11.1.515"}]}]}],"cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/129xxx/CVE-2026-129116.json"},{"type":"ARTICLE","url":"https://github.com/OpenKermit/ckermit/blob/v11.0.514/ckufio.c#L8249"},{"type":"FIX","url":"https://github.com/OpenKermit/ckermit/commit/fdfe8f13159f9276d87e02bedba15946b0edda97"},{"type":"ADVISORY","url":"https://github.com/OpenKermit/ckermit/releases/tag/v11.1.515"},{"type":"ADVISORY","url":"https://github.com/OpenKermit/ckermit/security/advisories/GHSA-5pc4-gh6q-5h4w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129116"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/c-kermit-7.0.197-before-11.1.515-iksd-authentication-bypass-via-refused-certificate-login"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openkermit/ckermit","events":[{"introduced":"0"},{"fixed":"fdfe8f13159f9276d87e02bedba15946b0edda97"}],"database_specific":{"extracted_events":[{"source":"REFERENCES_COMMIT","range":[{"fixed":"fdfe8f13159f9276d87e02bedba15946b0edda97"}]}]}}],"versions":["v11.0.514","v11.0.513","v11.0.512","v11.0.511","v11.0.510","v11.0.509","v11.0.508","v11.0.507","v11.0.506","v11.0.505","v11.0.504","v11.0.503","v11.0.502","v11.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-129116.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}