CVE-2026-78016 in Secure Connect Gateway Policy Manager
Summary
by MITRE • 10/09/2026
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Improper Validation of Specified Type of Input vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Information exposure and Information tampering.
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Analysis
by VulDB Data Team • 10/09/2026
The Dell Secure Connect Gateway Policy Manager, specifically in versions prior to 5.34.00.16, is susceptible to a critical security flaw classified as Improper Validation of Specified Type of Input. This vulnerability arises from insufficient sanitization and type checking mechanisms within the application logic that processes user-supplied data. When an attacker interacts with the Policy Manager interface or its underlying APIs, the system fails to rigorously verify that incoming parameters conform to expected data types or structural constraints. This lack of strict input validation allows malicious actors to inject malformed or unexpected data structures into the processing pipeline, bypassing standard security controls designed to filter out harmful payloads.
The operational impact of this vulnerability is significant due to its potential for both information exposure and information tampering. A low-privileged attacker who has obtained remote access credentials can leverage this flaw to manipulate system behavior without requiring elevated privileges. By exploiting the improper input validation, an adversary may extract sensitive configuration data, user session tokens, or other confidential information stored within the Policy Manager database, leading to unauthorized disclosure of proprietary network policies and security settings. Furthermore, the ability to tamper with inputs enables attackers to alter critical policy configurations, potentially disabling security rules, redirecting traffic through malicious endpoints, or creating backdoors that compromise the integrity of the entire secure gateway infrastructure.
From a classification perspective, this vulnerability aligns closely with CWE-20 Improper Input Validation and CWE-74 Injection in certain contexts where type confusion leads to unintended code execution or data manipulation. In terms of offensive security frameworks, such exploitation techniques are consistent with ATT&CK technique T1595 Active Scanning for gathering victim information or T1136 Create Account if the vulnerability allows for privilege escalation through configuration tampering. The ability to modify policies remotely places this flaw within the realm of lateral movement and persistence strategies, as attackers can establish long-term access by altering gateway rules to allow unauthorized traffic flows that bypass traditional perimeter defenses.
Mitigation efforts must prioritize immediate patching to version 5.34.00.16 or later, where these input validation checks have been hardened. In addition to software updates, organizations should enforce strict network segmentation policies to limit remote access to the Policy Manager interface only from trusted management networks. Implementing multi-factor authentication for all administrative accounts adds a crucial layer of defense against credential theft that often precedes such exploitation. Security teams should also monitor logs for anomalous configuration changes or unusual API calls originating from low-privileged users, as these may indicate active attempts to exploit this input validation weakness before patches are fully deployed across the environment.