{"id":"CVE-2023-47537","state":"PUBLISHED","title":"An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions\t allow","description":"An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions\t allows a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the FortiLink communication channel between the FortiOS device and FortiSwitch.","publishedAt":"2024-02-15T13:59:24.770Z","updatedAt":"2026-01-14T09:15:43.682Z","severity":{"score":4.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:X/RC:X","source":"fortinet"},"assigner":"fortinet","products":["Fortinet FortiOS"],"affected":[{"vendor":"Fortinet","product":"FortiOS","defaultStatus":"unaffected","versions":[{"version":"7.4.0","status":"affected","lessThanOrEqual":"7.4.1","versionType":"semver"},{"version":"7.2.0","status":"affected","lessThanOrEqual":"7.2.6","versionType":"semver"},{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.0.15","versionType":"semver"},{"version":"6.4.0","status":"affected","lessThanOrEqual":"6.4.16","versionType":"semver"}],"cpes":["cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.3:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.2:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.15:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.14:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.13:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.12:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.11:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.9:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.8:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.7:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.6:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.4:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.3:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.2:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.16:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.15:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.14:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.13:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.12:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.11:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.10:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.9:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.7:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.5:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.4:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.3:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.2:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*"]}],"references":["https://fortiguard.com/psirt/FG-IR-23-301"],"weaknesses":["CWE-295"],"ingestedAt":"2026-10-29T20:06:24.729Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/47xxx/CVE-2023-47537.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-47537","state":"PUBLISHED","datePublished":"2024-02-15T13:59:24.770Z","dateUpdated":"2026-01-14T09:15:43.682Z","assignerShortName":"fortinet","assignerOrgId":"6abe59d8-c742-4dff-8ce8-9b0ca1073da8","dateReserved":"2023-11-06T10:35:25.828Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions\t allows a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the FortiLink communication channel between the FortiOS device and FortiSwitch."}],"affected":[{"vendor":"Fortinet","product":"FortiOS","defaultStatus":"unaffected","versions":[{"version":"7.4.0","status":"affected","lessThanOrEqual":"7.4.1","versionType":"semver"},{"version":"7.2.0","status":"affected","lessThanOrEqual":"7.2.6","versionType":"semver"},{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.0.15","versionType":"semver"},{"version":"6.4.0","status":"affected","lessThanOrEqual":"6.4.16","versionType":"semver"}],"cpes":["cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.3:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.2:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.15:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.14:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.13:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.12:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.11:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.9:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.8:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.7:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.6:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.4:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.3:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.2:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.16:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.15:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.14:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.13:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.12:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.11:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.10:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.9:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.7:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.5:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.4:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.3:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.2:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*","cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*"]}],"references":[{"url":"https://fortiguard.com/psirt/FG-IR-23-301","name":"https://fortiguard.com/psirt/FG-IR-23-301"}],"metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:X/RC:X"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","lang":"en","description":"Information disclosure","type":"CWE"}]}],"providerMetadata":{"shortName":"fortinet","orgId":"6abe59d8-c742-4dff-8ce8-9b0ca1073da8","dateUpdated":"2026-01-14T09:15:43.682Z"},"solutions":[{"lang":"en","value":"Upgrade to FortiOS version 7.4.2 or above\nUpgrade to FortiOS version 7.2.7 or above\nUpgrade to FortiOS version 7.0.16 or above"}]},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"fortinet","product":"fortios","defaultStatus":"unknown","versions":[{"version":"6.4.0","status":"affected"},{"version":"7.0.0","status":"affected"},{"version":"7.2.0","status":"affected"},{"version":"7.4.0","status":"affected"}],"cpes":["cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2023-47537","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-05-21T13:43:02.127242Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-04T17:26:31.940Z"}},{"title":"CVE Program Container","references":[{"url":"https://fortiguard.com/psirt/FG-IR-23-301","name":"https://fortiguard.com/psirt/FG-IR-23-301","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T21:09:37.377Z"}}]}}}