{"id":"CVE-2021-29280","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-29280","generatedAt":"2026-10-28T00:32:32.920Z","title":"In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow","description":"In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow","published":"2021-08-19T16:15:12.000Z","lastModified":"2026-06-17T03:47:29.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H"},"cwe":["CWE-668"],"affected":["tp-link/tl-wr840n firmware"],"epss":{"score":0.00754,"percentile":0.54825,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.75%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29280","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}