{"schemaVersion":3,"id":"CVE-2021-45611","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects DC112A before 1.0.0.52, R6400 before 1.0.1.68, RAX200 before 1.0.3.106, WNDR3400v3 before 1.0.1.38, XR300 before 1.0.3.68, R8500 before 1.0.2.144, RAX75 before 1.0.3.106, R8300 before 1.0.2.144, and RAX80 before 1.0.3.106.","dates":{"published":"2021-12-26T00:36:49.000Z","modified":"2024-08-04T04:47:01.820Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.6,"severity":"critical","vector":"CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:C/UI:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01199,"percentile":0.67661,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.01199},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01199,"percentile":0.67661}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01199,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01199,"percentile":0.67661}]},"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-120","name":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","description":"The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/120.html"}],"affected":[{"vendor":"netgear","product":"dc112a_firmware","name":"dc112a firmware","label":"dc112a_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.0.52","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.0.52","eol":null,"hubHref":"/vendor/netgear/dc112a"},{"vendor":"netgear","product":"r6400_firmware","name":"r6400 firmware","label":"r6400_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.1.68","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.1.68","eol":null,"hubHref":"/vendor/netgear/r6400"},{"vendor":"netgear","product":"r8300_firmware","name":"r8300 firmware","label":"r8300_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.2.144","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.2.144","eol":null,"hubHref":"/vendor/netgear/r8300"},{"vendor":"netgear","product":"r8500_firmware","name":"r8500 firmware","label":"r8500_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.2.144","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.2.144","eol":null,"hubHref":"/vendor/netgear/r8500"},{"vendor":"netgear","product":"rax200_firmware","name":"rax200 firmware","label":"rax200_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.3.106","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.3.106","eol":null,"hubHref":"/vendor/netgear/rax200"},{"vendor":"netgear","product":"rax75_firmware","name":"rax75 firmware","label":"rax75_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.3.106","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.3.106","eol":null,"hubHref":"/vendor/netgear/rax75"},{"vendor":"netgear","product":"rax80_firmware","name":"rax80 firmware","label":"rax80_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.3.106","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.3.106","eol":null,"hubHref":"/vendor/netgear/rax80"},{"vendor":"netgear","product":"wndr3400v3_firmware","name":"wndr3400v3 firmware","label":"wndr3400v3_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.1.38","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.1.38","eol":null,"hubHref":"/vendor/netgear/wndr3400v3"},{"vendor":"netgear","product":"xr300_firmware","name":"xr300 firmware","label":"xr300_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.3.68","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.3.68","eol":null,"hubHref":"/vendor/netgear/xr300"}],"affectedCount":9,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://kb.netgear.com/000064488/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2020-0323","label":"kb.netgear.com/000064488/…","hostname":"kb.netgear.com","tags":["X Refsource MISC","Patch","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-12-26T00:36:49.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T04:47:01.820Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T09:54:29.906Z","stale":false,"partial":false}}