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Exploited vulnerabilities (CISA KEV)
CVEs with exploitation confirmed by CISA (Known Exploited Vulnerabilities), with required actions and deadlines.
CVE-2026-34908
Critical · 10.0
KEV Urgent · 73 Public exploit CWE-284 May 21, 2026
Ubiquiti UniFi OS Improper Access Control Vulnerability
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
Critical · 10.0
KEV High · 63 CWE-22 May 21, 2026
Ubiquiti UniFi OS Path Traversal Vulnerability
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 underlying account.
CVE-2026-34910
Critical · 10.0
KEV Urgent · 73 Public exploit CWE-20 May 21, 2026
Ubiquiti UniFi OS Improper Input Validation Vulnerability
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.