{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77539", "assignerOrgId": "fe490ce8-0395-4072-90d8-2707e1bdf984", "state": "PUBLISHED", "assignerShortName": "Ubiquiti", "dateReserved": "2026-08-20T20:32:30.113Z", "datePublished": "2026-08-26T09:50:36.980Z", "dateUpdated": "2026-08-26T09:50:36.980Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "fe490ce8-0395-4072-90d8-2707e1bdf984", "shortName": "Ubiquiti", "dateUpdated": "2026-08-26T09:50:36.980Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-20", "description": "CWE-20 Improper input validation", "type": "CWE"}]}], "affected": [{"vendor": "Ubiquiti Inc", "product": "UniFi OS Server", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.37", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS Server to execute a Command Injection on the host device.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS Server to execute a Command Injection on the host device."}]}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "CRITICAL", "baseScore": 9.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,5.1.37)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "UniFi OS Server", "source": "cna", "vendor": "Ubiquiti Inc"}, "product": "unifi_os_server", "vendor": "ubiquiti"}], "created": "2026-08-26T11:30:04.962262+00:00", "title": "Command Injection Vulnerability in UniFi OS Server", "updated": "2026-08-26T11:30:05.167608+00:00", "vendors": ["ubiquiti", "ubiquiti$PRODUCT$unifi_os_server"]}