{"id":"CVE-2025-41256","aliases":["EUVD-2025-19095","GHSA-688c-vjrc-84rv","GHSA-qq37-7frg-jxx4"],"status":"published","title":"Cyberduck and Mountain Duck - Weak Hash Algorithm for Certificate Fingerprint","description":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0013,"percentile":0.02664,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-328"],"published":"2025-06-25T09:16:58Z","modified":"2026-10-28T02:31:10Z","products":[{"vendor":"iterate gmbh","product":"cyberduck"},{"vendor":"iterate gmbh","product":"mountain duck"}],"references":[{"url":"https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash","tags":["third-party-advisory","exploit","advisory"]},{"url":"https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv","tags":["vendor-advisory","exploit","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-41256","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qq37-7frg-jxx4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/41xxx/CVE-2025-41256.json","tags":["advisory"]},{"url":"https://github.com/iterate-ch/cyberduck","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-41256","title":"Cyberduck and Mountain Duck - Weak Hash Algorithm for Certificate Fingerprint","description":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.","status":"published","published":"2025-06-25T09:16:58.586Z","modified":"2025-06-25T13:34:07.242Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-328"],"updated_at":"2026-11-02T14:32:31.631102Z"}],"euvd":[{"id":"EUVD-2025-19095","description":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.","status":"published","published":"2025-06-25T09:16:58Z","modified":"2025-06-25T13:34:07Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T20:32:16.964954Z"}],"ghsa":[{"id":"GHSA-qq37-7frg-jxx4","title":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e...","description":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.","status":"published","published":"2025-06-26T21:31:10Z","modified":"2025-06-26T21:31:19Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-328"],"updated_at":"2026-11-02T15:02:49.894932Z"}],"nvd":[{"id":"CVE-2025-41256","description":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.","status":"published","published":"2025-06-25T10:15:22.61Z","modified":"2026-06-17T09:22:41.027Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-328"],"updated_at":"2026-11-02T14:11:14.091082Z"}],"osv":[{"id":"CVE-2025-41256","title":"Cyberduck and Mountain Duck - Weak Hash Algorithm for Certificate Fingerprint","description":"Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.","status":"published","published":"2025-06-25T09:16:58.586Z","modified":"2026-10-28T02:31:10.306730418Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-328"],"updated_at":"2026-11-02T15:44:49.394967Z"}]}}