{"schema":"threatline.record/2","record":{"id":"CVE-2025-59718","aliases":[],"summary":"Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability","details":"Fortinet FortiOS, FortiSwitchMaster, FortiProxy, and FortiWeb contain an improper verification of cryptographic signature vulnerability that may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML message. Please be aware that CVE-2025-59719 pertains to the same problem and is mentioned in the same vendor advisory. Ensure to apply all patches mentioned in the advisory.","categories":["Network & edge"],"product":"Multiple Products","vendor":"Fortinet","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-59718","source_modified_at":"2026-10-15T01:09:26.767Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"FortiSwitchManager","vendor":"Fortinet","versions":[{"versionType":"semver","version":"7.2.0","lessThanOrEqual":"7.2.6","status":"affected"},{"versionType":"semver","version":"7.0.0","lessThanOrEqual":"7.0.5","status":"affected"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-59718","source_modified_at":"2026-10-15T01:09:26.767Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"FortiOS","vendor":"Fortinet","versions":[{"versionType":"semver","version":"7.6.0","lessThanOrEqual":"7.6.3","status":"affected"},{"versionType":"semver","version":"7.4.0","lessThanOrEqual":"7.4.8","status":"affected"},{"versionType":"semver","version":"7.2.0","lessThanOrEqual":"7.2.11","status":"affected"},{"versionType":"semver","version":"7.0.0","lessThanOrEqual":"7.0.17","status":"affected"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-59718","source_modified_at":"2026-10-15T01:09:26.767Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"FortiProxy","vendor":"Fortinet","versions":[{"versionType":"semver","version":"7.6.0","lessThanOrEqual":"7.6.3","status":"affected"},{"versionType":"semver","version":"7.4.0","lessThanOrEqual":"7.4.10","status":"affected"},{"versionType":"semver","version":"7.2.0","lessThanOrEqual":"7.2.14","status":"affected"},{"versionType":"semver","version":"7.0.0","lessThanOrEqual":"7.0.21","status":"affected"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.1,"severity":"Critical","kev":{"listed":true,"date_added":"2025-12-16","due_date":"2025-12-23","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":0.68293,"percentile":0.99333,"score_date":"2026-10-23"},"published_at":"2025-12-09T17:20:11.783Z","modified_at":"2026-10-15T01:09:26.767Z","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-2025-59718","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-15T01:09:26.767Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-59718","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://fortiguard.fortinet.com/psirt/FG-IR-25-647"},{"url":"https://docs.fortinet.com/upgrade-tool/fortigate","source":"CISA KEV"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59718","source":"CISA KEV"},{"source":"CVE List","url":"https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59718","tags":["government-resource"]},{"source":"CVE List","url":"https://cert-portal.siemens.com/productcert/html/ssa-864900.html"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2025-12-17T04:55:21.365957Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-15T01:09:26.767Z","content_hash":"77568ca5b1956b316be45808cce2c385914bb09e414e4c0deb9cca71e3fbe817"}}