{"schemaVersion":3,"id":"CVE-2018-21122","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Certain NETGEAR devices are affected by denial of service. This affects GS110EMX before 1.0.0.9, GS810EMX before 1.0.0.5, XS512EM before 1.0.0.6, and XS724EM before 1.0.0.6.","dates":{"published":"2020-04-22T15:25:11.000Z","modified":"2024-08-05T12:19:27.628Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AC:L/AV:A/A:H/C:N/I:N/PR:N/S:U/UI:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.0/AC:L/AV:A/A:H/C:N/I:N/PR:N/S:U/UI:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":3.3,"severity":"low","vector":"AV:A/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00531,"percentile":0.43724,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00531},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00531,"percentile":0.43724}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00531,"percentile":0.43724}]},"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-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"}],"affected":[{"vendor":"netgear","product":"gs110emx_firmware","name":"gs110emx firmware","label":"gs110emx_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.0.9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.0.9","eol":null,"hubHref":"/vendor/netgear/gs110emx"},{"vendor":"netgear","product":"gs810emx_firmware","name":"gs810emx firmware","label":"gs810emx_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.0.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.0.5","eol":null,"hubHref":"/vendor/netgear/gs810emx"},{"vendor":"netgear","product":"xs512em_firmware","name":"xs512em firmware","label":"xs512em_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.0.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.0.6","eol":null,"hubHref":"/vendor/netgear/xs512em"},{"vendor":"netgear","product":"xs724em_firmware","name":"xs724em firmware","label":"xs724em_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 1.0.0.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.0.6","eol":null,"hubHref":"/vendor/netgear/xs724em"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://kb.netgear.com/000060236/Security-Advisory-for-Denial-of-Service-on-Some-Switches-PSV-2018-0222","label":"kb.netgear.com/000060236/Security-Advisory-for-Denial-of-Service-on-Some-Switches-PSV-2018-0222","hostname":"kb.netgear.com","tags":["X Refsource CONFIRM","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-04-22T15:25:11.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T12:19:27.628Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T15:45:19.051Z","stale":false,"partial":false}}