{"schemaVersion":3,"id":"CVE-2026-21634","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A malicious actor with access to the adjacent network could overflow the UniFi Protect Application (Version 6.1.79 and earlier) discovery protocol causing it to restart.\n\n\nAffected Products:\nUniFi Protect Application (Version 6.1.79 and earlier).\n\nMitigation:\nUpdate your UniFi Protect Application to Version 6.2.72 or later.","dates":{"published":"2026-01-05T16:47:38.917Z","modified":"2026-01-05T20:42:08.706Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","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":"3.1","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}]},"epss":{"probability":0.00431,"percentile":0.36006,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.00999999999999994,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00421},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00431,"percentile":0.36006}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00421,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-10T00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Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"}],"affected":[{"vendor":"ubiquiti inc","product":"unifi protect application","name":"UniFi Protect Application","label":"unifi protect application","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 6.1.79, < 6.2.72","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.1.79, < 6.2.72","eol":null,"hubHref":"/vendor/ubiquiti_inc/unifi_protect_application"},{"vendor":"ui","product":"unifi_protect","name":"unifi protect","label":"unifi_protect","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 6.2.72","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.2.72","eol":null,"hubHref":"/vendor/ui/unifi_protect"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://community.ui.com/releases/Security-Advisory-Bulletin-058-058/6922ff20-8cd7-4724-8d8c-676458a2d0f9","label":"community.ui.com/releases/Security-Advisory-Bulletin-058-058/6922ff20-8cd7-4724-8d8c-676458a2d0f9","hostname":"community.ui.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-01-05T16:47:38.917Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-01-05T20:42:08.706Z","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":"2026-10-20T16:59:17.081Z","stale":false,"partial":false}}