CVE-2026-79942: Dell Secure Connect Gateway Privilege Escalation

CVE-2026-79942 Overview

CVE-2026-79942 is an Execution with Unnecessary Privileges vulnerability [CWE-250] in Dell Secure Connect Gateway (SCG) 5.0. The flaw affects both the SCG Appliance and SCG Application prior to versions 5.36.00.16 and 5.36.00.00, respectively. A high-privileged attacker with local access to the appliance can exploit the issue to obtain unauthorized access to resources beyond their intended scope. Dell published fixes in advisory DSA-2026-382 for the Secure Connect Gateway Virtual Edition.

Critical Impact
Local exploitation grants an attacker with existing high privileges the ability to leverage unnecessary process privileges, resulting in unauthorized access to protected components on the SCG appliance.

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 (as identified in DSA-2026-382)

Discovery Timeline

2026-09-09 - CVE CVE-2026-79942 published to the National Vulnerability Database (NVD)
2026-09-09 - Last updated in NVD database

Technical Details for CVE-2026-79942

Vulnerability Analysis

The vulnerability stems from a component in Dell Secure Connect Gateway that executes with privileges higher than required for its function. Under CWE-250, software operating with unnecessary privileges expands the blast radius when an attacker gains any foothold on the system. In this case, a locally authenticated user with high privileges can pivot through the over-privileged execution context to reach resources or actions the user should not access. The confidentiality impact is rated none, while integrity and availability impacts are low. The attack is limited to the local scope and requires no user interaction.

Root Cause

The root cause is improper privilege minimization in an SCG service or utility. The affected component runs under an elevated account rather than a least-privilege identity constrained to its documented purpose. This design choice permits privilege reuse when an attacker has already authenticated with high privileges to the SCG host.

Attack Vector

Exploitation requires local access to the SCG appliance and existing high-privileged credentials. The attacker invokes or influences the over-privileged component to perform actions outside their authorization boundary. No network vector, user interaction, or scope change is required. Refer to the Dell Security Advisory DSA-2026-382 for vendor-specific exploitation details.

// No verified public proof-of-concept is available for CVE-2026-79942.
// Refer to Dell advisory DSA-2026-382 for technical details.

Detection Methods for CVE-2026-79942

Indicators of Compromise

Unexpected process invocations on the SCG appliance executed by elevated service accounts outside normal operational baselines.
Access to configuration files, credentials, or diagnostic data by administrative users whose role does not require such access.
Audit log entries showing privileged actions initiated from interactive shells on the SCG host.

Detection Strategies

Baseline the expected process tree and privilege boundaries of the SCG appliance, then alert on deviations involving over-privileged binaries.
Correlate local authentication events with subsequent privileged command execution on the SCG host.
Review Dell SCG audit logs for administrative actions that do not align with scheduled maintenance windows.

Monitoring Recommendations

Forward SCG appliance system, authentication, and application logs to a centralized SIEM for retention and correlation.
Monitor version banners and running package versions to confirm all SCG instances have been upgraded to fixed builds.
Track administrative account usage on SCG appliances and enforce alerts on privileged session activity.

How to Mitigate CVE-2026-79942

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.
Audit and restrict the set of accounts holding high privileges on the SCG appliance.
Rotate credentials associated with administrative access to the SCG host after patching.

Patch Information

Dell released fixed versions as documented in Dell Security Advisory DSA-2026-382. Apply Appliance 5.36.00.16 or later and Application 5.36.00.00 or later. Follow Dell's documented upgrade procedure for the Virtual Edition and validate the version post-upgrade.

Workarounds

Limit local and administrative access to the SCG appliance to a minimal set of trusted operators.
Enforce multi-factor authentication and jump-host access controls in front of SCG management interfaces.
Segment the SCG appliance on a management VLAN with strict access control lists until patching completes.

bash

# Verify installed Dell Secure Connect Gateway version after upgrade
# (run on the SCG appliance shell)
cat /opt/dell/scg/VERSION 2>/dev/null || \
  rpm -qa | grep -i secure-connect-gateway