{"id":"CVE-2022-27240","aliases":["DEBIAN-CVE-2022-27240","EUVD-2022-31749","UBUNTU-CVE-2022-27240"],"status":"published","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01557,"percentile":0.75354,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120"],"published":"2022-03-18T05:55:25Z","modified":"2026-10-28T10:27:51Z","fixes":[{"ecosystem":"Debian:12","package":"glewlwyd","fixed_in":["2.6.1-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"glewlwyd","fixed_in":["2.6.1-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"glewlwyd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"glewlwyd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-2"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"glewlwyd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1-2ubuntu1","1.2.2-1","1.3.1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"glewlwyd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.9-2","1.4.9-3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"glewlwyd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-3","2.6.1-1","2.6.1-1build1"]}],"products":[{"vendor":"glewlwyd_sso_server_project","product":"glewlwyd_sso_server"}],"references":[{"url":"https://github.com/babelouest/glewlwyd/commit/4c5597c155bfbaf6491cf6b83479d241ae66940a","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/babelouest/glewlwyd/releases/tag/v2.6.2","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/27xxx/CVE-2022-27240.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-27240","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2022-27240","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2022-27240","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-27240","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2022-27240","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","status":"published","published":"2022-03-18T05:55:25Z","modified":"2024-08-03T05:25:32.488Z","updated_at":"2026-11-02T14:34:34.250357Z"}],"euvd":[{"id":"EUVD-2022-31749","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","status":"published","published":"2022-03-18T05:55:25Z","modified":"2024-08-03T05:25:32Z","updated_at":"2026-11-03T03:25:43.539822Z"}],"nvd":[{"id":"CVE-2022-27240","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","status":"published","published":"2022-03-18T06:15:08.59Z","modified":"2026-06-17T04:36:33.387Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:14.24948Z"}],"osv":[{"id":"DEBIAN-CVE-2022-27240","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","status":"published","published":"2022-03-18T06:15:08.59Z","modified":"2026-11-03T08:01:09.114707404Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T08:25:01.007408Z"},{"id":"UBUNTU-CVE-2022-27240","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","status":"published","published":"2022-03-18T06:15:00Z","modified":"2025-10-24T04:53:35Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:53:53.13624Z"},{"id":"CVE-2022-27240","description":"scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.","status":"published","published":"2022-03-18T05:55:25Z","modified":"2026-10-28T10:27:51.480662534Z","updated_at":"2026-11-02T15:44:24.758293Z"}]}}