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CVE-2026-33000

CVSS 9.1 · Critical EPSS 0.05% · P16

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
Ubiquiti IncUniFi OS Server< 5.0.8affected
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I. Basic Information for CVE-2026-33000

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Ubiquiti IncUniFi OS Server 0 ~ 5.0.8 -

II. Public POCs for CVE-2026-33000

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III. Intelligence Information for CVE-2026-33000

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Vendor Advisories for CVE-2026-33000 (1)

Same Patch Batch · Ubiquiti Inc · 2026-05-22 · 5 CVEs total

CVE-2026-3491010.0 CRITICALUniFi OS设备命令注入漏洞
CVE-2026-3490910.0 CRITICALUniFi OS设备路径遍历漏洞
CVE-2026-3490810.0 CRITICALUniFi OS越权访问漏洞
CVE-2026-349117.7 HIGHUniFi OS越权路径遍历漏洞

IV. Related Vulnerabilities

Same product: UniFi OS Server
Same vendor: Ubiquiti Inc
Same weakness: CWE-20

V. Comments for CVE-2026-33000

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