CVE-2026-79691 in Secure Connect Gateway
Summary
by MITRE • 09/07/2026
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to protection mechanism bypass.
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Analysis
by VulDB Data Team • 09/07/2026
The identified security flaw resides within the Dell SCG 5.0 Appliance and Application software suites for versions preceding 5.36.00.16 and 5.36.00.00 respectively. This vulnerability is classified as an Improper Certificate Validation, a critical category of cryptographic implementation errors that undermines the fundamental trust model required for secure network communications. In modern distributed systems and appliance management interfaces, Transport Layer Security or similar encryption protocols rely heavily on the rigorous validation of digital certificates to ensure that clients are communicating with legitimate servers and not malicious intermediaries. The specific defect in these Dell SCG versions involves a failure by the application logic to adequately verify the authenticity, validity period, or chain of trust associated with SSL/TLS certificates presented during connection establishment processes. This oversight creates a significant gap in the security architecture where the software accepts connections based on incomplete or incorrect certificate verification procedures.
From an operational perspective, this technical deficiency allows for Man-in-the-Middle attacks and other interception-based exploits without requiring prior authentication credentials. An unauthenticated attacker positioned within the network path can exploit this weakness to intercept sensitive management traffic, potentially capturing administrative credentials, configuration data, or storage array status information. The consequence of such a breach extends beyond simple eavesdropping; it enables the bypassing of essential protection mechanisms that are designed to restrict access to critical system functions. By spoofing valid certificates or exploiting the lack of strict validation, an adversary can impersonate the management interface, thereby gaining unauthorized control over storage operations and potentially compromising data integrity across the enterprise infrastructure managed by these appliances.
This vulnerability aligns closely with Common Weakness Enumeration identifier CWE-295, which describes Improper Certificate Validation, as well as CWE-347 regarding Improper Verification of Cryptographic Signature if signature verification is also implicated in the handshake process. In terms of offensive security tactics, this flaw facilitates techniques documented under MITRE ATT&CK framework identifiers such as T1078 Valid Accounts or more specifically mechanisms that allow for credential harvesting and session hijacking due to the lack of mutual authentication integrity. The ability to bypass protection mechanisms effectively neutralizes the perimeter defense provided by encrypted management channels, leaving internal network segments exposed to lateral movement and privilege escalation attacks initiated from compromised endpoints within the same broadcast domain.
To mitigate this risk, immediate patching is required for all affected Dell SCG 5.0 Appliance versions prior to build 5.36.00.16 and Application versions prior to 5.36.00.00. Organizations should verify their current software revisions against the vendor's security advisory and apply the latest updates provided by Dell Technologies. In environments where immediate patching is not feasible due to operational constraints, network segmentation strategies should be employed to restrict access to the management interfaces of these appliances exclusively from trusted administrative subnets. Additionally, implementing strict firewall rules that limit inbound connections on ports used for appliance management can reduce the attack surface available to potential remote attackers seeking to exploit this certificate validation flaw until a permanent software fix is deployed and validated in production environments.