{"basis":"claimed","id":"CVE-2023-27997","name":"Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability","vendorProject":"Fortinet","product":"FortiOS and FortiProxy SSL-VPN","publishedAt":"2023-06-13","cvss":{"score":9.2,"severity":"CRITICAL","version":"3.1"},"exploited":{"kevAdded":"2023-06-13","dueDate":"2023-07-04","ransomware":true},"epss":{"score":0.85689,"percentile":0.99725,"date":"2026-11-02"},"coverage":{"cloudflare":{"status":"no_history","firstOn":null,"daysToRule":null},"aws":{"status":"none","firstOn":null,"daysToRule":null},"azure":{"status":"none","firstOn":null,"daysToRule":null},"google":{"status":"no_history","firstOn":null,"daysToRule":null},"fastly":{"status":"no_history","firstOn":null,"daysToRule":null},"f5":{"status":"rule","firstOn":"2023-07-11","daysToRule":28},"akamai":{"status":"no_source","firstOn":null,"daysToRule":null},"crs":{"status":"none","firstOn":null,"daysToRule":null}},"title":null,"description":"A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.","cwes":["CWE-122"],"vendors":[{"vendor":"cloudflare","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"aws","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"azure","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"google","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"fastly","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"f5","status":"rule","basis":"claimed","firstOn":"2023-07-11","firstIsNew":true,"daysToRule":28,"daysAtMost":null,"freePlan":false,"claims":[{"id":"f082f0a4cfb9e11920066794d3b3e8cd195321f5d1c3aa70c48d2d96c33f0b34","cve_id":"CVE-2023-27997","vendor":"f5","product":"Attack signatures","rule_id":"200011093","rule_name":"Fortinet SSL VPN Buffer Overflow","change":"new","default_action":null,"published_on":"2023-07-11","source_url":"https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog","source_title":"F5 Distributed Cloud attack signatures changelog","excerpt":"Added: signature 200011093 \"Fortinet SSL VPN Buffer Overflow\" (Buffer Overflow, risk High), systems: Other Web Server. References: CVE-2023-27997.","first_seen_at":"2026-11-02T21:00:28.480Z"},{"id":"4eb9e6af2efcdf420cf4d52fe2366e042967d37d17fc7305ffed1f092de87ab9","cve_id":"CVE-2023-27997","vendor":"f5","product":"Attack signatures","rule_id":"200011093","rule_name":"Fortinet SSL VPN Buffer Overflow","change":"new","default_action":null,"published_on":"2023-08-08","source_url":"https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog","source_title":"F5 Distributed Cloud attack signatures changelog","excerpt":"Added: signature 200011093 \"Fortinet SSL VPN Buffer Overflow\" (Buffer Overflow, risk High), systems: Other Web Server. References: CVE-2023-27997.","first_seen_at":"2026-11-02T21:00:28.306Z"}]},{"vendor":"akamai","status":"no_source","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"crs","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]}],"updatedAt":"2026-11-03T03:17:40.264Z","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:R","ssvc":{"exploitation":"active","automatable":"yes","technicalImpact":"total"},"measured":[],"social":{"total":0,"first_seen":null,"daily":[{"day":"2026-10-21","posts":0},{"day":"2026-10-22","posts":0},{"day":"2026-10-23","posts":0},{"day":"2026-10-24","posts":0},{"day":"2026-10-25","posts":0},{"day":"2026-10-26","posts":0},{"day":"2026-10-27","posts":0},{"day":"2026-10-28","posts":0},{"day":"2026-10-29","posts":0},{"day":"2026-10-30","posts":0},{"day":"2026-10-31","posts":0},{"day":"2026-11-01","posts":0},{"day":"2026-11-02","posts":0},{"day":"2026-11-03","posts":0}],"top_posts":[],"exploit_repositories":[]}}