CVE-2026-79727: Dell Secure Connect Gateway Info Disclosure

CVE-2026-79727 is an information disclosure vulnerability in Dell Secure Connect Gateway caused by uncleared debug information. Local attackers can exploit this to expose sensitive system data. This article covers technical details, affected versions, potential impact, and recommended mitigation strategies.

CVE-2026-79727 Overview

Dell Secure Connect Gateway (SCG) 5.0 contains an information disclosure vulnerability caused by uncleared debug information. The flaw affects 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. A local, low-privileged attacker can read residual debug data and extract sensitive system information from the appliance.

Critical Impact
Local low-privileged users can access uncleared debug information, exposing sensitive system data that supports further reconnaissance or privilege escalation attempts on the Secure Connect Gateway.

Affected Products

Dell Secure Connect Gateway 5.0 Appliance versions prior to 5.36.00.16
Dell Secure Connect Gateway 5.0 Application versions prior to 5.36.00.00
Dell Secure Connect Gateway Virtual Edition

Discovery Timeline

2026-09-09 - CVE CVE-2026-79727 published to NVD
2026-09-09 - Last updated in NVD database

Technical Details for CVE-2026-79727

Vulnerability Analysis

The vulnerability is classified under [CWE-1258] — Exposure of Sensitive System Information Due to Uncleared Debug Information. Dell SCG retains debug data after processing operations complete. This residual information remains accessible to authenticated users on the appliance. An attacker with local shell access can query these artifacts to learn about the internal state of the gateway.

Information exposed through uncleared debug channels typically includes runtime state, configuration details, and diagnostic output. This data supports subsequent attack stages by revealing implementation details that would otherwise be hidden. The confidentiality impact is limited, and integrity and availability are not affected.

Root Cause

Debug information generated by SCG components is not cleared or protected after use. The vulnerable versions store diagnostic output in locations reachable by authenticated local accounts without additional access controls. Dell addressed the issue by removing or restricting access to these debug artifacts in fixed releases.

Attack Vector

Exploitation requires local access with low privileges on the SCG appliance. No user interaction is needed. The attacker reads accessible debug files or interfaces on the appliance to harvest sensitive system information. Remote exploitation over the network is not possible.

No public proof-of-concept code or exploit is available for this issue. See the Dell Security Update Advisory for vendor-supplied technical details.

// No verified proof-of-concept available.
// Refer to the Dell Security Update Advisory (DSA-2026-382) for details.

Detection Methods for CVE-2026-79727

Indicators of Compromise

Unexpected shell activity from low-privileged local accounts on the SCG appliance
Access to diagnostic or debug file paths outside of routine administrative workflows
Unusual read operations against log or trace directories on SCG hosts

Detection Strategies

Audit local account activity on the SCG appliance and alert on non-administrative users accessing debug artifacts
Compare deployed SCG versions against the fixed releases 5.36.00.16 (Appliance) and 5.36.00.00 (Application) using inventory tooling
Review authentication logs for unexpected local logons to the gateway

Monitoring Recommendations

Forward SCG operating system, authentication, and application logs to a centralized log platform for correlation
Track configuration changes and account provisioning events on Secure Connect Gateway hosts
Establish a baseline of legitimate administrative access patterns and alert on deviations

How to Mitigate CVE-2026-79727

Immediate Actions Required

Upgrade Dell SCG 5.0 Appliance to version 5.36.00.16 or later
Upgrade Dell SCG 5.0 Application to version 5.36.00.00 or later
Inventory all SCG deployments and confirm patch status through configuration management
Review the Dell Security Update Advisory (DSA-2026-382) for full remediation guidance

Patch Information

Dell released fixed versions of Secure Connect Gateway that address the uncleared debug information issue. Apply Appliance 5.36.00.16 or later, and Application 5.36.00.00 or later. Refer to the vendor advisory for supported upgrade paths and release notes.

Workarounds

Restrict local account creation on SCG hosts to administrators only
Enforce least-privilege access on the appliance and remove unnecessary local users
Isolate SCG management interfaces on a dedicated administrative network segment

bash

# Verify installed Dell Secure Connect Gateway version
cat /etc/scg-release 2>/dev/null || rpm -qa | grep -i scg

# Confirm the running version meets or exceeds the fixed release
# Appliance: 5.36.00.16 or later
# Application: 5.36.00.00 or later