Description

Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Denial of service, Information disclosure, and Remote execution.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.5",
  "pubDate": "2026-10-09T09:17:09.300Z",
  "pubdate": "2026-10-09T09:17:09.300Z",
  "executiveSummary": "Dell Secure Connect Gateway (SCG) Policy Manager versions prior to 5.34.00.16 are susceptible to an Improper Certificate Validation vulnerability. This security flaw originates from a failure to correctly verify the identity of communicating entities, which allows for the subversion of TLS/SSL trust mechanisms.\nThe vulnerability is critical as it permits an unauthenticated, remote attacker to perform man-in-the-middle (MitM) interceptions. By presenting forged or unauthorized certificates, an attacker can bypass standard security handshakes. Successful exploitation grants the adversary the capability to compromise system integrity and confidentiality, leading to a complete Denial of Service (DoS), unauthorized information disclosure, and the potential for arbitrary remote code execution (RCE) on the affected appliance.\nGiven that the attack does not require prior authentication, the risk level is elevated, necessitating immediate attention. Organizations running versions earlier than 5.34.00.16 must prioritize mitigation to prevent remote exploitation and maintain the security posture of their infrastructure.",
  "technicalDetails": "The vulnerability in Dell Secure Connect Gateway (SCG) Policy Manager, identified as an Improper Certificate Validation flaw, stems from a failure in the application's implementation of transport layer security (TLS). Specifically, the software fails to rigorously validate the authenticity and validity period of X.509 certificates presented during secure communication sessions. By neglecting to perform chain-of-trust verification—such as checking the root certificate authority (CA) signatures, checking against revocation lists, or validating hostnames—the Policy Manager inadvertently trusts malicious endpoints.\nThe attack flow begins with an adversary positioning themselves in a network path between the SCG Policy Manager and a legitimate remote server. As the Policy Manager initiates a secure connection, the attacker intercepts the initial handshake process. Because the application logic does not properly validate the server certificate, the attacker can substitute their own self-signed or otherwise fraudulent certificate. The application accepts this certificate as legitimate, establishing an encrypted tunnel directly to the attacker rather than the intended destination.\nThis position allows for several post-exploitation impacts. First, the attacker can launch a Denial of Service (DoS) attack by dropping or corrupting the traffic stream, effectively paralyzing the Policy Manager's ability to communicate with the Dell backend or internal management services. Second, the attacker gains the ability to decrypt, read, and modify data in transit, facilitating Information Disclosure of sensitive configuration parameters or credentials transmitted by the gateway. Third, and most severely, by injecting malicious payloads or malformed responses into the intercepted stream, an attacker may exploit underlying deserialization or command-processing functions within the Policy Manager. This leads to Remote Code Execution (RCE), where the attacker executes arbitrary code under the context of the service, potentially granting full system compromise. The vulnerability is exploitable remotely over the network without any requirement for authenticated access, significantly lowering the barrier for entry for an attacker."
}