{"id":"CVE-2023-42789","title":"A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 throug…","summary":"A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 throug…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"fortinet","product":"fortiproxy","affected":["fortiproxy >= 2.0.0, <= 2.0.13","fortiproxy >= 7.0.0, <= 7.0.12","fortiproxy >= 7.2.0, <= 7.2.6","fortiproxy = 7.4.0","fortios >= 6.2.0, <= 6.2.15","fortios >= 6.4.0, <= 6.4.14","fortios >= 7.0.0, <= 7.0.12","fortios >= 7.2.0, <= 7.2.5","fortios = 7.4.0","fortios = 7.4.1"],"published":"2024-03-12","updated":"2026-07-08","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-42789","references":[{"url":"https://fortiguard.com/psirt/FG-IR-23-328","label":"psirt@fortinet.com"},{"url":"https://fortiguard.com/psirt/FG-IR-23-328","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","exploit-available"],"epss":0.03306,"epssPercentile":0.88009,"ingestedAt":"2026-07-08T13:51:10.411Z","exploits":{"github":1,"githubRepos":["https://github.com/jhonnybonny/CVE-2023-42789"],"checkedAt":"2026-09-21T15:26:10.859Z"},"exploitAvailable":true,"slug":"CVE-2023-42789","body":"## Overview\n\nA out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 through 7.2.6, FortiProxy 7.0.0 through 7.0.12, FortiProxy 2.0.0 through 2.0.13, FortiSASE 23.2.b allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.\n\n## Affected\n\n- `fortiproxy >= 2.0.0, <= 2.0.13`\n- `fortiproxy >= 7.0.0, <= 7.0.12`\n- `fortiproxy >= 7.2.0, <= 7.2.6`\n- `fortiproxy = 7.4.0`\n- `fortios >= 6.2.0, <= 6.2.15`\n- `fortios >= 6.4.0, <= 6.4.14`\n- `fortios >= 7.0.0, <= 7.0.12`\n- `fortios >= 7.2.0, <= 7.2.5`\n- `fortios = 7.4.0`\n- `fortios = 7.4.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":67,"depthScoreParts":{"impact":53.9,"likelihood":0.7,"exploitation":12,"ransomware":0},"changes":[{"seq":4678,"id":"CVE-2023-42789","ts":1788887199105,"field":"exploit_available","old":"false","new":"true"},{"seq":3561,"id":"CVE-2023-42789","ts":1788886315541,"field":"exploit_available","old":"true","new":"false"},{"seq":2415,"id":"CVE-2023-42789","ts":1788882984370,"field":"exploit_available","old":"false","new":"true"},{"seq":1444,"id":"CVE-2023-42789","ts":1788882397558,"field":"exploit_available","old":"true","new":"false"},{"seq":558,"id":"CVE-2023-42789","ts":1788881833890,"field":"exploit_available","old":"false","new":"true"}]}