CVE-2026-79738: Dell SCG Information Disclosure Vulnerability

CVE-2026-79738 Overview

CVE-2026-79738 is a hard-coded credentials vulnerability [CWE-798] affecting Dell Secure Connect Gateway (SCG) 5.0. The flaw exists in 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. An unauthenticated remote attacker can exploit the embedded credentials to access sensitive information exposed by the appliance. Dell published fixes in advisory DSA-2026-382.

Critical Impact
Unauthenticated remote attackers can leverage hard-coded credentials to obtain confidential information from affected Dell SCG deployments without any user interaction.

Affected Products

Dell Secure Connect Gateway 5.0 Appliance (Virtual Edition) 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 deployments on both application and virtual CPE configurations

Discovery Timeline

2026-09-09 - CVE-2026-79738 published to NVD
2026-09-09 - Dell releases security update DSA-2026-382
2026-09-09 - Last updated in NVD database

Technical Details for CVE-2026-79738

Vulnerability Analysis

Dell Secure Connect Gateway is the remote support and telemetry gateway that Dell customers deploy to connect enterprise infrastructure to Dell's support services. CVE-2026-79738 stems from hard-coded credentials embedded inside the SCG 5.0 product distribution. Because the credentials ship with the software, every deployment shares the same secret material until patched.

An attacker who obtains the embedded credentials, whether by extracting them from the appliance image or from published research, can authenticate to exposed services over the network. The vulnerability requires no privileges and no user interaction. Successful exploitation results in disclosure of confidential data handled by the gateway, though the flaw does not directly enable integrity or availability impact.

Root Cause

The root cause is the use of static, hard-coded credentials [CWE-798] built into Dell SCG 5.0 Appliance and Application distributions. Hard-coded secrets bypass normal credential lifecycle controls such as rotation, revocation, and per-instance uniqueness. Once the secret is known, it works across every unpatched deployment of the same product version.

Attack Vector

Exploitation is remote and network-based. An attacker locates an SCG 5.0 endpoint reachable on the network, submits the embedded credentials to the affected service, and gains access to information the gateway exposes to authenticated callers. No prior foothold, phishing, or privilege escalation is required. Deployments with SCG management interfaces exposed to untrusted networks face the highest risk.

No verified public exploit code is available. Refer to the Dell Security Update DSA-2026-382 advisory for technical remediation details.

Detection Methods for CVE-2026-79738

Indicators of Compromise

Successful authentication events to Dell SCG management or API endpoints from unexpected source IP addresses, particularly external or non-administrative networks
Unusual outbound data transfers or API queries from SCG appliances that do not correlate with scheduled telemetry to Dell backends
Access to SCG configuration, log export, or diagnostic endpoints outside of documented administrator activity windows

Detection Strategies

Inventory all Dell Secure Connect Gateway deployments and confirm running versions against the fixed builds 5.36.00.16 (Appliance) and 5.36.00.00 (Application)
Review SCG authentication and access logs for logins that do not map to a known administrator identity or scheduled service account
Correlate SCG network telemetry with firewall and NetFlow records to identify management-plane access from outside sanctioned administration segments

Monitoring Recommendations

Alert on any authentication attempt to SCG interfaces from IP ranges that are not part of the approved administrator subnet
Monitor for configuration reads, log downloads, or diagnostic bundle generation events on SCG appliances
Forward SCG syslog and audit data to a centralized SIEM or data lake for retention and behavioral baselining

How to Mitigate CVE-2026-79738

Immediate Actions Required

Upgrade Dell SCG 5.0 Appliance to version 5.36.00.16 or later, and Dell SCG 5.0 Application to version 5.36.00.00 or later, per Dell advisory DSA-2026-382
Restrict network reachability to SCG management and API interfaces so that only trusted administrator subnets can connect
Audit historical access logs for any activity that predates the patch and appears inconsistent with normal administrative behavior

Patch Information

Dell has released fixed builds for both distribution formats. Customers should apply Dell SCG 5.0 Appliance 5.36.00.16 or Dell SCG 5.0 Application 5.36.00.00 as documented in the Dell Security Update DSA-2026-382. No supported workaround replaces the patch, because the credentials are embedded in the shipped software.

Workarounds

Place SCG appliances behind a firewall or jump host so management services are unreachable from untrusted networks until the patch is applied
Enforce network segmentation that isolates the SCG appliance from user endpoints and general server VLANs
Increase log retention and monitoring on SCG hosts during the remediation window to detect exploitation attempts

bash

# Configuration example: restrict SCG management access to an administrator subnet
# Replace 10.10.20.0/24 with the actual admin network and <SCG_IP> with the appliance address
iptables -A INPUT -p tcp -d <SCG_IP> --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp -d <SCG_IP> --dport 443 -j DROP