What’s Vulnerable › Vulnerabilities

CVE-2026-47369

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% 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 escalate privileges 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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