CVE-2026-77545

A malicious actor with access to the network, low privileges and under certain conditions could exploit an Active Debug Code vulnerability found in certain devices running UniFi OS to escalate privileges within such UniFi OS devices or instances.

CVSS v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-26 10:16

Updated : 2026-08-28 18:49

NVD link : CVE-2026-77545

Mitre link : CVE-2026-77545

CVE.ORG link : CVE-2026-77545

JSON object : View

Products Affected

No product.

CWE

CWE-489

Active Debug Code

{"id": "CVE-2026-77545", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-77545", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-26T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "fe490ce8-0395-4072-90d8-2707e1bdf984", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.3}]}, "affected": [{"source": "fe490ce8-0395-4072-90d8-2707e1bdf984", "affectedData": [{"vendor": "Ubiquiti Inc", "product": "UniFi OS Server", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.37", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Cloud Keys", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Network Video Recorders", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Enterprise Network Video Recorders", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Enterprise Network Attached Storage", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Machines", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Enterprise Firewall Core", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Routers", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Enterprise Fortress Gateway", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Cloud Gateways", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Wall", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Express 7", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Network Attached Storage", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.32", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-26T10:16:42.407", "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9", "source": "fe490ce8-0395-4072-90d8-2707e1bdf984"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "fe490ce8-0395-4072-90d8-2707e1bdf984", "description": [{"lang": "en", "value": "CWE-489"}]}], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network, low privileges and under certain conditions could exploit an Active Debug Code vulnerability found in certain devices running UniFi OS to escalate privileges within such UniFi OS devices or instances."}], "lastModified": "2026-08-28T18:49:15.340", "sourceIdentifier": "fe490ce8-0395-4072-90d8-2707e1bdf984"}