CVE-2026-33000

A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ui:unifi_os_server:*:*:*:*:*:*:*:*

History

23 Jul 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) Un actor malicioso con acceso a la red y privilegios elevados podría explotar una vulnerabilidad de validación de entrada incorrecta encontrada en dispositivos UniFi OS para ejecutar una inyección de comandos.

24 Jun 2026, 15:10

Type	Values Removed	Values Added
CPE		cpe:2.3:a:ui:unifi_os_server::::::::
First Time		Ui Ui unifi Os Server
References	~~() https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b -~~	() https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b - Patch, Vendor Advisory

22 May 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-22 02:16

Updated : 2026-07-23 16:10

NVD link : CVE-2026-33000

Mitre link : CVE-2026-33000

CVE.ORG link : CVE-2026-33000

JSON object : View

Products Affected

ui

unifi_os_server

CWE

CWE-20

Improper Input Validation

{"id": "CVE-2026-33000", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33000", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-22T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "support@hackerone.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.3}]}, "affected": [{"source": "support@hackerone.com", "affectedData": [{"vendor": "Ubiquiti Inc", "product": "UniFi OS Server", "versions": [{"status": "affected", "version": "0", "lessThan": "5.0.8", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-22T02:16:33.933", "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b", "tags": ["Patch", "Vendor Advisory"], "source": "support@hackerone.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-20"}]}], "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 devices to execute a Command Injection."}, {"lang": "es", "value": "Un actor malicioso con acceso a la red y privilegios elevados podr\u00eda explotar una vulnerabilidad de validaci\u00f3n de entrada incorrecta encontrada en dispositivos UniFi OS para ejecutar una inyecci\u00f3n de comandos."}], "lastModified": "2026-07-23T16:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ui:unifi_os_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "660F20FA-9862-4FE1-8C27-0AEAEE2F2A69", "versionEndExcluding": "5.0.8"}], "operator": "OR"}]}], "sourceIdentifier": "support@hackerone.com"}