{"id":"CVE-2026-70465","state":"PUBLISHED","title":"A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.11 m","description":"A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.11 may allow an unauthenticated attacker in a position to alter or craft DNS responses to the targeted host to execute arbitrary code via malicious packets.","publishedAt":"2026-08-12T11:52:25.666Z","updatedAt":"2026-10-20T13:54:58.117Z","severity":{"score":7.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","source":"fortinet"},"assigner":"fortinet","products":["Fortinet FortiClientWindows"],"affected":[{"vendor":"Fortinet","product":"FortiClientWindows","defaultStatus":"unaffected","versions":[{"version":"7.4.0","status":"affected","lessThanOrEqual":"7.4.3","versionType":"semver"},{"version":"7.2.0","status":"affected","lessThanOrEqual":"7.2.11","versionType":"semver"}],"cpes":["cpe:2.3:a:fortinet:forticlientwindows:7.4.3:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.4.2:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.4.1:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.4.0:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.11:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.10:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.9:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.8:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.7:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.6:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.5:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.4:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.3:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.2:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.1:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.0:*:*:*:*:*:*:*"]}],"references":["https://fortiguard.fortinet.com/psirt/FG-IR-26-156"],"weaknesses":["CWE-120"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/70xxx/CVE-2026-70465.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-70465","state":"PUBLISHED","datePublished":"2026-08-12T11:52:25.666Z","dateUpdated":"2026-10-20T13:54:58.117Z","assignerShortName":"fortinet","assignerOrgId":"6abe59d8-c742-4dff-8ce8-9b0ca1073da8","dateReserved":"2026-08-04T15:01:40.657Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.11 may allow an unauthenticated attacker in a position to alter or craft DNS responses to the targeted host to execute arbitrary code via malicious packets."}],"affected":[{"vendor":"Fortinet","product":"FortiClientWindows","defaultStatus":"unaffected","versions":[{"version":"7.4.0","status":"affected","lessThanOrEqual":"7.4.3","versionType":"semver"},{"version":"7.2.0","status":"affected","lessThanOrEqual":"7.2.11","versionType":"semver"}],"cpes":["cpe:2.3:a:fortinet:forticlientwindows:7.4.3:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.4.2:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.4.1:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.4.0:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.11:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.10:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.9:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.8:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.7:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.6:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.5:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.4:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.3:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.2:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.1:*:*:*:*:*:*:*","cpe:2.3:a:fortinet:forticlientwindows:7.2.0:*:*:*:*:*:*:*"]}],"references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-26-156","name":"https://fortiguard.fortinet.com/psirt/FG-IR-26-156"}],"metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","lang":"en","description":"Escalation of privilege","type":"CWE"}]}],"providerMetadata":{"shortName":"fortinet","orgId":"6abe59d8-c742-4dff-8ce8-9b0ca1073da8","dateUpdated":"2026-10-20T13:54:58.117Z"},"solutions":[{"lang":"en","value":"Upgrade to FortiClientWindows version 7.4.4 or above\nUpgrade to FortiClientWindows version 7.2.12 or above"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-70465"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-13T03:55:27.282Z"}}]}}}