UI UniFi Dream Router Firmware vulnerabilities
10 CVEs affecting UI UniFi Dream Router Firmware, 3 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-55112, published 2026-07-02.
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Known exploited (CISA KEV) first, then by EPSS exploit probability.
- CVE-2026-34910: Ubiquiti UniFi OS Improper Input Validation Vulnerability, published 2026-05-22. Critical severity, CVSS 10.0. Actively exploited: in CISA KEV since 2026-06-23. EPSS: 45.8% chance of exploitation in the next 30 days. A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
- CVE-2026-34908: Ubiquiti UniFi OS Improper Access Control Vulnerability, published 2026-05-22. Critical severity, CVSS 10.0. Actively exploited: in CISA KEV since 2026-06-23. EPSS: 15.2% chance of exploitation in the next 30 days. A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.
- CVE-2026-34909: Ubiquiti UniFi OS Path Traversal Vulnerability, published 2026-05-22. Critical severity, CVSS 10.0. Actively exploited: in CISA KEV since 2026-06-23. EPSS: 1.8% chance of exploitation in the next 30 days. A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an…
- CVE-2026-54402, published 2026-07-02. High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days. A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi OS to execute a Command Injection on the host device.
- CVE-2026-54403, published 2026-07-02. High severity, CVSS 8.6. EPSS: 0.8% chance of exploitation in the next 30 days. A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.
- CVE-2026-34911, published 2026-05-22. High severity, CVSS 7.7. EPSS: 0.6% chance of exploitation in the next 30 days. A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be…
- CVE-2026-54404, published 2026-07-02. High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days. A malicious actor with access to the network and low privileges could exploit a series of authenticated SQL Injection vulnerabilities found in UniFi OS to escalate privileges within such UniFi OS…
- CVE-2026-54401, published 2026-07-02. High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days. A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) to escalate privileges within such UniFi OS devices or instances.
- CVE-2026-55112, published 2026-07-02. High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days. A malicious actor with access to the network and low privileges and under certain conditions could exploit an Improper Access Control vulnerability found in UniFi OS with UniFi Protect Application to…
- CVE-2026-55110, published 2026-07-02. Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days. A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that…