CVE-2026-78480 identifies a Missing Authentication for Critical Function vulnerability (CWE-306) in Dell Secure Connect Gateway 5.0 Appliance and Application versions prior to 5.36.00.16 and 5.36.00.00 respectively. This vulnerability allows an unauthenticated attacker with remote access to invoke critical functions without authentication, potentially leading to denial of service conditions. The CVSS v3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. No vendor advisory or patch information is currently available, and no known exploits have been reported.

An unauthenticated remote attacker could exploit this vulnerability to access critical functions without authentication, potentially causing denial of service to the affected system. There is no indication of confidentiality or integrity impact. No active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict remote access to the affected Dell SCG 5.0 Appliance and Application versions to trusted networks only, and monitor for unusual activity related to critical functions.