{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "UniFi Access Application", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "4.2.29", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "support@hackerone.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ui:unifi_access:*:*:*:*:*:*:*:*", "matchCriteriaId": "CED8C93F-E70F-419F-ADA4-972BAFAF52AD", "versionEndExcluding": "4.2.29", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device."}, {"lang": "es", "value": "Un actor malicioso con acceso a la red y privilegios elevados podr\u00eda explotar una vulnerabilidad de control de acceso inadecuado encontrada en la aplicaci\u00f3n UniFi Access para escalar privilegios en el dispositivo anfitri\u00f3n."}], "id": "CVE-2026-54400", "lastModified": "2026-10-25T21:10:00.770", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "support@hackerone.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54400", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-02T16:10:53.382801Z", "version": "2.0.3"}}]}, "published": "2026-07-02T15:17:03.623", "references": [{"source": "support@hackerone.com", "tags": ["Vendor Advisory"], "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "support@hackerone.com", "type": "Secondary"}]}