{"id":"CVE-2018-13383","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-13383","generatedAt":"2026-10-29T01:42:38.743Z","title":"Fortinet FortiOS and FortiProxy Out-of-bounds Write","description":"A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.","published":"2019-05-29T18:29:01.000Z","lastModified":"2026-06-17T01:39:19.000Z","status":"Analyzed","sourceIdentifier":"psirt@fortinet.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-787"],"affected":["fortinet/fortiproxy","fortinet/fortios"],"epss":{"score":0.33647,"percentile":0.98376,"date":"2026-10-27","history":[]},"kev":{"listed":true,"dateAdded":"2022-01-10","dueDate":"2022-07-10","knownRansomwareCampaignUse":"Known","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-13383"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 July 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://fortiguard.com/advisory/FG-IR-18-388","tags":["Mitigation","Vendor Advisory"],"source":"psirt@fortinet.com"},{"url":"https://fortiguard.com/advisory/FG-IR-20-229","tags":["Vendor Advisory"],"source":"psirt@fortinet.com"},{"url":"https://fortiguard.com/advisory/FG-IR-18-388","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://fortiguard.com/advisory/FG-IR-20-229","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13383","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-13383","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}