What’s Vulnerable › Vulnerabilities

CVE-2026-47370

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-12 · updated 2026-06-17
• Weakness: CWE-20

Description

A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain devices running UniFi OS to execute a Command Injection within such UniFi OS devices or instances.

Affected products

• Ubiquiti Inc EFG: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc ENVR: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc ENVR-Core: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc Express: before 4.0.15 — fixed in 4.0.15
• Ubiquiti Inc Express 7: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCG-Fiber: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCG-Industrial: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCG-Max: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCG-Ultra: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCK: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCK-Enterprise: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UCKP: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDM: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDM-Beast: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDM-Pro: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDM-Pro-Max: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDM-SE: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDR: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDR-5G: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDR7: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UDW: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UNAS-2: before 5.1.16 — fixed in 5.1.16
• Ubiquiti Inc UNAS-4: before 5.1.16 — fixed in 5.1.16
• Ubiquiti Inc UNAS-Pro: before 5.1.16 — fixed in 5.1.16
• Ubiquiti Inc UNAS-Pro-4: before 5.1.16 — fixed in 5.1.16
• Ubiquiti Inc UNAS-Pro-8: before 5.1.16 — fixed in 5.1.16
• Ubiquiti Inc UniFi OS Server: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UNVR: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UNVR-G2: before 5.1.15 — fixed in 5.1.15
• Ubiquiti Inc UNVR-G2-Pro: before 5.1.15 — fixed in 5.1.15

How to fix

Upgrade to a fixed version: Ubiquiti Inc EFG 5.1.15; Ubiquiti Inc ENVR 5.1.15; Ubiquiti Inc ENVR-Core 5.1.15; Ubiquiti Inc Express 4.0.15; Ubiquiti Inc Express 7 5.1.15; Ubiquiti Inc UCG-Fiber 5.1.15; Ubiquiti Inc UCG-Industrial 5.1.15; Ubiquiti Inc UCG-Max 5.1.15; Ubiquiti Inc UCG-Ultra 5.1.15; Ubiquiti Inc UCK 5.1.15; Ubiquiti Inc UCK-Enterprise 5.1.15; Ubiquiti Inc UCKP 5.1.15. Check the vendor advisory for mitigations.

References

• https://community.ui.com/releases/Security-Advisory-Bulletin-065-065/aa46a22b-fc43-4eae-9382-6fc8feda967a

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