{"schemaVersion":3,"id":"CVE-2022-24973","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR940N 3.20.1 Build 200316 Rel.34392n (5553) routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13992.","dates":{"published":"2023-03-28T00:00:00.000Z","modified":"2025-02-19T19:07:59.472Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":6.8,"severity":"medium","vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8,"severity":"high","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":6.8,"severity":"medium","vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00718,"percentile":0.53259,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":-0.006000000000000016,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00724},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00718,"percentile":0.53259}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00724,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00718,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00718,"percentile":0.53259}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-121","name":"Stack-based Buffer Overflow","description":"A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/121.html"}],"affected":[{"vendor":"tp-link","product":"tl-wr940n_firmware","name":"tl-wr940n firmware","label":"tl-wr940n_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"3.20.1 Build 200316 Rel.34392n (5553)","noFixRecorded":false,"fixedIn":null},{"text":"3.20.1:build_200316","noFixRecorded":false,"fixedIn":null}],"versionsText":"3.20.1 Build 200316 Rel.34392n (5553) | 3.20.1:build_200316","eol":null,"hubHref":"/vendor/tp-link/tl-wr940n"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-22-406/","label":"www.zerodayinitiative.com/advisories/ZDI-22-406/","hostname":"www.zerodayinitiative.com","tags":["Third Party Advisory","VDB Entry"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-03-28T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-02-19T19:07:59.472Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T17:39:08.405Z","stale":false,"partial":false}}