{"schema":"threatline.record/2","record":{"id":"CVE-2025-54309","aliases":[],"summary":" CrushFTP Unprotected Alternate Channel Vulnerability","details":"CrushFTP contains an unprotected alternate channel vulnerability. When the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS.","categories":["Network & edge"],"product":"CrushFTP","vendor":"CrushFTP","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-54309","source_modified_at":"2025-10-21T22:45:21.853Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"CrushFTP","vendor":"CrushFTP","versions":[{"lessThan":"10.8.5","status":"affected","version":"10","versionType":"custom"},{"lessThan":"11.3.4_23","status":"affected","version":"11","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-54309","source_modified_at":"2025-10-21T22:45:21.853Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"CrushFTP","ecosystem":null},"version":"10.8.5","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-54309","source_modified_at":"2025-10-21T22:45:21.853Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"CrushFTP","ecosystem":null},"version":"11.3.4_23","basis":"first unaffected version stated in the CVE record"}],"cvss":9,"severity":"Critical","kev":{"listed":true,"date_added":"2025-07-22","due_date":"2025-08-12","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.93473,"percentile":0.99841,"score_date":"2026-10-23"},"published_at":"2025-07-18T00:00:00.000Z","modified_at":"2025-10-21T22:45:21.853Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2025-54309","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T22:45:21.853Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-54309","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54309","source":"CISA KEV"},{"source":"CVE List","url":"https://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/"},{"source":"CVE List","url":"https://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/"},{"source":"CVE List","url":"https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability"},{"source":"CVE List","url":"https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability"},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2025-08-15T18:50:07.009232Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T22:45:21.853Z","content_hash":"968be37ceee45dc68a3f798ede1918c3b8229354d31117d1adbecefb718d4936"}}