{"api_version":"1","generated_at":"2026-07-24T17:33:51+00:00","cve":"CVE-2021-26112","urls":{"html":"https://cve.report/CVE-2021-26112","api":"https://cve.report/api/cve/CVE-2021-26112.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-26112","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-26112"},"summary":{"title":"CVE-2021-26112","description":"Multiple stack-based buffer overflow vulnerabilities [CWE-121] both in network daemons and in the command line interpreter of FortiWAN before 4.5.9 may allow an unauthenticated attacker to potentially corrupt control data in memory and execute arbitrary code via specifically crafted requests.","state":"PUBLIC","assigner":"psirt@fortinet.com","published_at":"2022-04-06 10:15:00","updated_at":"2022-04-13 18:46:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://fortiguard.com/psirt/FG-IR-21-065","name":"https://fortiguard.com/psirt/FG-IR-21-065","refsource":"CONFIRM","tags":[],"title":"PSIRT Advisories | FortiGuard","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-26112","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26112","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"26112","vulnerable":"1","versionEndIncluding":"4.5.8","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"fortinet","cpe5":"fortiwan","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-26112","ASSIGNER":"psirt@fortinet.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Fortinet","product":{"product_data":[{"product_name":"Fortinet FortiWAN","version":{"version_data":[{"version_value":"FortiWAN before 4.5.9"}]}}]}}]}},"impact":{"cvss":{"attackComplexity":"High","attackVector":"Network","availabilityImpact":"High","baseScore":7.7,"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:U/RC:C","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Execute unauthorized code or commands"}]}]},"references":{"reference_data":[{"refsource":"CONFIRM","name":"https://fortiguard.com/psirt/FG-IR-21-065","url":"https://fortiguard.com/psirt/FG-IR-21-065"}]},"description":{"description_data":[{"lang":"eng","value":"Multiple stack-based buffer overflow vulnerabilities [CWE-121] both in network daemons and in the command line interpreter of FortiWAN before 4.5.9 may allow an unauthenticated attacker to potentially corrupt control data in memory and execute arbitrary code via specifically crafted requests."}]}},"nvd":{"publishedDate":"2022-04-06 10:15:00","lastModifiedDate":"2022-04-13 18:46:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:fortinet:fortiwan:*:*:*:*:*:*:*:*","versionEndIncluding":"4.5.8","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"26112","Ordinal":"201057","Title":"CVE-2021-26112","CVE":"CVE-2021-26112","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"26112","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}