CVE-2026-79644 is an improper certificate validation vulnerability in Dell Secure Connect Gateway 5.0 Appliance and Application. Versions prior to 5.36.00.16 (Appliance) and 5.36.00.00 (Application) are affected. The vulnerability allows an unauthenticated attacker with remote access to potentially bypass certificate validation checks, leading to unauthorized access. The CVSS 3.1 base score is 7.4 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N), reflecting high impact on confidentiality and integrity but requiring high attack complexity and no privileges or user interaction. No vendor advisory or patch information is currently available, and no known exploits have been reported.

An unauthenticated remote attacker could exploit the improper certificate validation to gain unauthorized access to the Dell Secure Connect Gateway 5.0 system. This could result in a complete compromise of confidentiality and integrity of the affected system. Availability is not impacted. The attack complexity is high, which may limit exploitation likelihood.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, organizations should monitor Dell's security advisories for updates. No specific temporary mitigations are provided in the available data.