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CVE-2026-3491010.0/CRITICALEPSS 94.0%CISA KEV
2026-05-22

Ubiquiti UniFi OS Remote Command Injection Vulnerability (CVE-2026-34910) Security Advisory

[Affected Scope] All network-accessible Ubiquiti UniFi OS devices

[Impact] Unauthenticated remote attackers can exploit an Improper Input Validation vulnerability (CWE-20) to execute arbitrary commands with root privileges, potentially recruiting devices into botnets (e.g., Mirai)

[Mitigation] Immediately apply the official vendor security patches and restrict external internet access to the UniFi OS management interface