{"id":"CVE-2018-13382","published":"2019-06-04T21:29:00Z","modified":"2026-06-17T01:39:18Z","title":"Fortinet FortiOS and FortiProxy Improper Authorization","vendor":"Fortinet","product":"FortiOS and FortiProxy","tier":"core","eol":null,"description":{"text":"An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to modify the password of an SSL VPN web portal user via specially crafted HTTP requests","provenance":"source","from":"NVD"},"summary":{"text":"An improper authorization flaw in the SSL VPN web portal of Fortinet's FortiOS and FortiProxy products allows the issue to be triggered in affected versions of both. An unauthenticated remote attacker can change the password of an SSL VPN web portal user by sending specially crafted HTTP requests, requiring no authentication or user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T06:59:27Z"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.81691,"percentile":0.99642,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-01-10","dueDate":"2022-07-10","ransomware":true,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-13382","provenance":"source"},"vulncheckKev":{"dateAdded":"2019-10-02","exploitedFirstSeen":"2019-10-02","ransomware":true,"evidence":[{"url":"https://www.ncsc.gov.uk/news/alert-vpn-vulnerabilities","date":"2019-10-02"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-01-10"},{"url":"https://www.cisa.gov/uscert/ncas/alerts/aa22-158a","date":"2022-06-07"},{"url":"https://cisa.gov/news-events/cybersecurity-advisories/aa22-158a","date":"2022-06-10"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-285","name":"Improper Authorization"}],"references":[{"url":"https://fortiguard.com/advisory/FG-IR-18-389","tags":["Vendor Advisory"]},{"url":"https://www.fortiguard.com/psirt/FG-IR-20-231","tags":["Vendor Advisory"]},{"url":"https://fortiguard.com/advisory/FG-IR-18-389","tags":["Vendor Advisory"]},{"url":"https://www.fortiguard.com/psirt/FG-IR-20-231","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13382","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Unauthenticated exploitation of public-facing SSL VPN portal","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows an unauthenticated attacker to modify the password","start":205,"end":262}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1098","name":"Account Manipulation","tactics":["persistence","privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Password change alters existing account credentials","mappingType":"primary_impact","evidence":[{"from":"description","quote":"modify the password of an SSL VPN web portal user","start":243,"end":292}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2018-5326","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-5326","exploited":true,"exploitedSince":"2022-01-10","provenance":"source"},"exploits":[{"id":49074,"url":"https://www.exploit-db.com/exploits/49074","title":"Fortinet FortiOS 6.0.4 - Unauthenticated SSL VPN User Password Modification","type":"webapps","platform":"hardware","date":"2020-11-19","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2020-11-19"},"pocGithub":{"count":2,"skipped":1,"earliest":"2019-08-11","earliestUrl":"https://github.com/milo2012/CVE-2018-13382","repos":[{"name":"milo2012/CVE-2018-13382","url":"https://github.com/milo2012/CVE-2018-13382","stars":146,"created":"2019-08-11"},{"name":"tumikoto/Exploit-FortinetMagicBackdoor","url":"https://github.com/tumikoto/Exploit-FortinetMagicBackdoor","stars":1,"created":"2021-04-28"}]},"first":{"date":"2019-08-11","source":"PoC-in-GitHub","url":"https://github.com/milo2012/CVE-2018-13382"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1098"],"provenance":"ai"}],"timeline":[{"date":"2019-06-04","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-13382","provenance":"source"},{"date":"2019-08-11","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub; later: Exploit-DB 2020-11-19","url":"https://github.com/milo2012/CVE-2018-13382","provenance":"source"},{"date":"2019-10-02","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.ncsc.gov.uk/news/alert-vpn-vulnerabilities","provenance":"source"},{"date":"2022-01-10","kind":"kev","label":"Added to CISA KEV (known ransomware use)","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-01-10","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-5326","provenance":"source"}],"speed":{"daysToPublicExploit":68,"firstExploitFrom":"PoC-in-GitHub","daysToKev":951},"priority":{"score":78.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 2584 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":19.93,"detail":"percentile 0.9964"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 Exploit-DB entry; 2 PoC-in-GitHub repos"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.25,"detail":"base score 7.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}