{"id":"CVE-2026-77556","aliases":["EUVD-2026-84755","GHSA-rf8m-f7x4-4m54"],"status":"published","title":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability...","description":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00522,"percentile":0.4467,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-09-22T18:41:15Z","modified":"2026-09-22T21:31:34Z","products":[{"vendor":"@clerk","product":"express"},{"vendor":"ubiquiti inc","product":"cloud gateways"},{"vendor":"ubiquiti inc","product":"dream machines"},{"vendor":"ubiquiti inc","product":"dream routers"},{"vendor":"ubiquiti inc","product":"dream wall"},{"vendor":"ubiquiti inc","product":"enterprise firewalls"},{"vendor":"ubiquiti inc","product":"express"},{"vendor":"ubiquiti inc","product":"express 7"},{"vendor":"ubiquiti inc","product":"unifi gateways"}],"references":[{"url":"https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77556"},{"url":"https://github.com/advisories/GHSA-rf8m-f7x4-4m54"}],"sources":{"cve":[{"id":"CVE-2026-77556","description":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.","status":"published","published":"2026-09-22T18:41:15.201Z","modified":"2026-09-22T19:33:21.537Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:16.072351Z"}],"euvd":[{"id":"EUVD-2026-84755","description":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.","status":"published","published":"2026-09-22T18:41:15Z","modified":"2026-09-22T19:33:21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:01.71506Z"}],"ghsa":[{"id":"GHSA-rf8m-f7x4-4m54","title":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability...","description":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.","status":"published","published":"2026-09-22T21:31:26Z","modified":"2026-09-22T21:31:34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:12:18.539197Z"}],"nvd":[{"id":"CVE-2026-77556","description":"A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.","status":"published","published":"2026-09-22T19:16:51.86Z","modified":"2026-09-22T20:17:08.57Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:50.703874Z"}]}}