CVE-2026-77545 is a vulnerability affecting devices running UniFi OS, involving an Active Debug Code weakness. A malicious actor with low privileges and network access can exploit this vulnerability under certain conditions to escalate privileges on affected UniFi OS devices or instances. The vulnerability requires network access and low-level privileges to exploit, making it accessible to a range of potential attackers. Privilege escalation vulnerabilities of this nature can allow attackers to gain elevated control over affected systems. Ubiquiti has published a security advisory bulletin addressing this issue. The flaw highlights risks associated with debug code left active in production firmware. Organizations using UniFi OS devices should review the advisory and apply any recommended mitigations or patches promptly.
