{"id":"CVE-2025-14821","summary":"Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows","details":"A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\\etc directory, which can be created and modified by unprivileged local users.","modified":"2026-05-28T04:10:24.070792646Z","published":"2026-04-07T16:34:10.718Z","related":["CGA-hc43-945h-jr7v"],"database_specific":{"cna_assigner":"redhat","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14821.json","cwe_ids":["CWE-427"]},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"WEB","url":"https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7067"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2025-14821"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14821.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-14821"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2423148"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/libssh/libssh-mirror","events":[{"introduced":"0"},{"fixed":"50313883f3a077458cde4ea95bf46bfeb0771b34"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.12.0"}],"cpe":"cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*","source":"CPE_RANGE"}}],"versions":["libssh-0.11.0","libssh-0.8.0","release-0-3-0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-14821.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}