CVE-2026-79943 describes an improper validation of certificates with host mismatches 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 security protections due to failure to properly validate that the certificate matches the host. This is classified under CWE-297. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.

An unauthenticated remote attacker could exploit this vulnerability to bypass protection mechanisms in Dell SCG 5.0, potentially undermining the security guarantees of the system. The impact is limited to confidentiality and integrity with no reported availability impact. The CVSS score of 4.8 reflects a medium severity level.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should monitor Dell's advisories for updates and consider mitigating exposure by restricting remote access to the affected components where feasible.