{"id":"CVE-2025-23390","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-23390","generatedAt":"2026-10-28T07:41:01.182Z","title":"A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if the certificate isn’t set in the `known_hosts` file.","description":"A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if the certificate isn’t set in the `known_hosts` file. This could allow the execution of a man-in-the-middle (MitM) attack against Fleet. In case the server that is being connected to has a trusted entry in the known_hosts file, then Fleet will correctly check the authenticity of the presented certificate.","published":"2026-10-15T09:17:14.000Z","lastModified":"2026-10-19T22:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"meissner@suse.de","cvss":{"version":"3.1","score":6.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},"cwe":["CWE-295"],"affected":[],"epss":{"score":0.0019,"percentile":0.0862,"date":"2026-10-27","history":[{"date":"2026-10-15","score":0.0019,"percentile":0.08121}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-15T09:17:14.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-10-15T09:17:14.190Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23390","source":"meissner@suse.de"},{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-xgpc-q899-67p8","source":"meissner@suse.de"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-23390","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}