{"id":"CVE-2020-24363","published":"2020-08-31T16:15:15Z","modified":"2026-06-17T03:05:25Z","title":"TP-link TL-WA855RE Missing Authentication for Critical Function Vulnerability","vendor":"TP-Link","product":"TL-WA855RE","tier":"core","eol":null,"description":{"text":"TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the same network) to submit a TDDP_RESET POST request for a factory reset and reboot. The attacker can then obtain incorrect access control by setting a new administrative password.","provenance":"source","from":"NVD"},"summary":{"text":"The TP-Link TL-WA855RE V5 (firmware 20200415-rel37464) range extender contains a missing authentication flaw in its critical functionality, which allows a factory reset and reboot to be triggered without credentials. An unauthenticated attacker on the same network can submit a TDDP_RESET POST request, then set a new administrative password, gaining control of the device with no user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-31T04:54:25Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.22187,"percentile":0.97672,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2025-09-02","dueDate":"2025-09-23","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://www.tp-link.com/us/home-networking/range-extender/tl-wa855re/#overview ; https://www.tp-link.com/us/support/download/tl-wa855re/#FAQs ; https://nvd.nist.gov/vuln/detail/CVE-2020-24363","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-09-02","exploitedFirstSeen":"2025-09-02","ransomware":false,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-09-02"},{"url":"https://www.rapid7.com/cdn/assets/bltbd2f1cd70f9e3e7f/691360b9c91291146f1a5308/threat-landscape-report-q3-2025.pdf","date":"2025-11-12"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"}],"evidenceTotal":3,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"references":[{"url":"http://malwrforensics.com/en/2020/08/31/cve-2020-24363-tl-wa855re-v5-advisory/","tags":["Third Party Advisory"]},{"url":"https://pastebin.com/VjHM4UiA","tags":["Third Party Advisory"]},{"url":"https://www.tp-link.com/us/support/download/tl-wa855re/#Firmware","tags":["Product"]},{"url":"http://malwrforensics.com/en/2020/08/31/cve-2020-24363-tl-wa855re-v5-advisory/","tags":["Third Party Advisory"]},{"url":"https://pastebin.com/VjHM4UiA","tags":["Third Party Advisory"]},{"url":"https://www.tp-link.com/us/support/download/tl-wa855re/#Firmware","tags":["Product"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-24363","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Unauthenticated network request exploits exposed device interface","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allow an unauthenticated attacker (on the same network) to submit a TDDP_RESET POST request","start":48,"end":139}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1098","name":"Account Manipulation","tactics":["persistence","privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Attacker sets new admin credentials, altering account access","mappingType":"primary_impact","evidence":[{"from":"description","quote":"can then obtain incorrect access control by setting a new administrative password","start":185,"end":266}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2020-17095","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-17095","exploited":true,"exploitedSince":"2025-09-02","provenance":"source"},"exploits":[{"id":49092,"url":"https://www.exploit-db.com/exploits/49092","title":"TP-Link TL-WA855RE V5_200415 - Device Reset Auth Bypass","type":"webapps","platform":"hardware","date":"2020-11-23","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2020-11-23"},"first":{"date":"2020-11-23","source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/49092"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1098"],"provenance":"ai"}],"timeline":[{"date":"2020-08-31","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24363","provenance":"source"},{"date":"2020-11-23","kind":"exploit-public","label":"First public exploit: Exploit-DB (EDB-49092)","url":"https://www.exploit-db.com/exploits/49092","provenance":"source"},{"date":"2025-09-02","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV 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Exploit-DB entry"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}