{"id":"CVE-2025-41255","aliases":["EUVD-2025-19096","GHSA-vjjc-grpp-m655","GHSA-wxfx-h38m-cr9x"],"status":"published","title":"Cyberduck and Mountain Duck - Improper Certificate Store Handling","description":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.","severity":{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00187,"percentile":0.08425,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-266"],"published":"2025-06-25T09:21:37Z","modified":"2026-10-28T02:31:08Z","products":[{"vendor":"iterate gmbh","product":"cyberduck"},{"vendor":"iterate gmbh","product":"mountain duck"}],"references":[{"url":"https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handling","tags":["third-party-advisory","exploit","advisory"]},{"url":"https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655","tags":["vendor-advisory","exploit","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-41255","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wxfx-h38m-cr9x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/41xxx/CVE-2025-41255.json","tags":["advisory"]},{"url":"https://github.com/iterate-ch/cyberduck","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-41255","title":"Cyberduck and Mountain Duck - Improper Certificate Store Handling","description":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.","status":"published","published":"2025-06-25T09:21:37.479Z","modified":"2025-06-25T13:33:27.985Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:32:31.631102Z"}],"euvd":[{"id":"EUVD-2025-19096","description":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.","status":"published","published":"2025-06-25T09:21:37Z","modified":"2025-06-25T13:33:27Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T20:32:16.964954Z"}],"ghsa":[{"id":"GHSA-wxfx-h38m-cr9x","title":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates ...","description":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.","status":"published","published":"2025-06-26T21:31:11Z","modified":"2025-06-26T21:31:20Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T15:02:49.894932Z"}],"nvd":[{"id":"CVE-2025-41255","description":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.","status":"published","published":"2025-06-25T10:15:21.783Z","modified":"2026-06-17T09:22:40.927Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:11:14.091082Z"}],"osv":[{"id":"CVE-2025-41255","title":"Cyberduck and Mountain Duck - Improper Certificate Store Handling","description":"Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.","status":"published","published":"2025-06-25T09:21:37.479Z","modified":"2026-10-28T02:31:08.635754499Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T15:44:49.394967Z"}]}}