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CVE-2026-33000

Quick assessment

Affected
Ubiquiti Inc UniFi OS Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ubiquiti UniFi OS Server是美国优比快（Ubiquiti）公司的一个统一管理UniFi网络与安防设备的服务器平台。 Ubiquiti UniFi OS Server存在安全漏洞，该漏洞源于输入验证不当，可能导致具有网络访问权限和高权限的恶意行为者执行命令注入。

CVSS 9.1 · Critical EPSS 1.44% · P72

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ubiquiti Inc UniFi OS Server < 5.0.8 affected
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I. Basic Information for CVE-2026-33000

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Ubiquiti UniFi OS Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ubiquiti UniFi OS Server是美国优比快（Ubiquiti）公司的一个统一管理UniFi网络与安防设备的服务器平台。 Ubiquiti UniFi OS Server存在安全漏洞，该漏洞源于输入验证不当，可能导致具有网络访问权限和高权限的恶意行为者执行命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ubiquiti Inc UniFi 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-2026-34910 10.0 CRITICAL Ubiquiti UniFi OS Server 安全漏洞
CVE-2026-34909 10.0 CRITICAL Ubiquiti UniFi OS Server 安全漏洞
CVE-2026-34908 10.0 CRITICAL Ubiquiti UniFi OS Server 安全漏洞
CVE-2026-34911 7.7 HIGH Ubiquiti UniFi OS Server 安全漏洞

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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