{"api_version":"1","generated_at":"2026-07-23T20:19:15+00:00","cve":"CVE-2021-29280","urls":{"html":"https://cve.report/CVE-2021-29280","api":"https://cve.report/api/cve/CVE-2021-29280.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-29280","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29280"},"summary":{"title":"CVE-2021-29280","description":"In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-08-19 16:15:00","updated_at":"2021-08-26 18:26:00"},"problem_types":["CWE-668"],"metrics":[],"references":[{"url":"https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning","name":"https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning","refsource":"MISC","tags":[],"title":"GitHub - deadlysnowman3308/upgraded-ARP-Poisoning: An upgraded-ARP-Poisoning attack can be directed at “cheating” a host computer or a network router. If a router has the wrong MAC address for a given IP address, then all communications are routed to the wrong host.","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/","name":"https://hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/","refsource":"MISC","tags":[],"title":"Upgraded-ARP-Poisoning tool: – HackingVila","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-29280","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29280","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"29280","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"tp-link","cpe5":"tl-wr840n","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"29280","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"tp-link","cpe5":"tl-wr840n_firmware","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-29280","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning","refsource":"MISC","name":"https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning"},{"refsource":"MISC","name":"https://hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/","url":"https://hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/"}]}},"nvd":{"publishedDate":"2021-08-19 16:15:00","lastModifiedDate":"2021-08-26 18:26:00","problem_types":["CWE-668"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","attackVector":"ADJACENT_NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM"},"exploitabilityScore":1.2,"impactScore":5.2},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:A/AC:M/Au:N/C:N/I:P/A:P","accessVector":"ADJACENT_NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":4.3},"severity":"MEDIUM","exploitabilityScore":5.5,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:tp-link:tl-wr840n_firmware:-:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:tp-link:tl-wr840n:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"29280","Ordinal":"204479","Title":"CVE-2021-29280","CVE":"CVE-2021-29280","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"29280","Ordinal":"1","NoteData":"In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow","Type":"Description","Title":null},{"CveYear":"2021","CveId":"29280","Ordinal":"2","NoteData":"2021-08-19","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"29280","Ordinal":"3","NoteData":"2021-08-19","Type":"Other","Title":"Modified"}]}}}