{"id":"CVE-2022-42475","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-42475","generatedAt":"2026-10-31T11:46:51.163Z","title":"Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability","description":"A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier  and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.","published":"2023-01-02T09:15:09.000Z","lastModified":"2026-06-17T05:05:00.000Z","status":"Analyzed","sourceIdentifier":"psirt@fortinet.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-197","CWE-787"],"affected":["fortinet/fortios","fortinet/fortiproxy"],"epss":{"score":0.99474,"percentile":0.99943,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2022-12-13","dueDate":"2023-01-03","knownRansomwareCampaignUse":"Known","notes":"Apply updates per vendor instructions.\nhttps://www.fortiguard.com/psirt/FG-IR-22-398;  https://nvd.nist.gov/vuln/detail/CVE-2022-42475"},"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 3 January 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://fortiguard.com/psirt/FG-IR-22-398","tags":["Exploit","Mitigation","Vendor Advisory"],"source":"psirt@fortinet.com"},{"url":"https://fortiguard.com/psirt/FG-IR-22-398","tags":["Exploit","Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42475","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-42475","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."}