CVE-2026-79731: Dell SCG Information Disclosure Vulnerability

CVE-2026-79731 Overview

CVE-2026-79731 is a hard-coded credentials vulnerability [CWE-798] in Dell Secure Connect Gateway (SCG) 5.0. 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. An unauthenticated remote attacker can potentially exploit the embedded credentials to access sensitive information exposed by the gateway. Dell disclosed the issue in advisory DSA-2026-382 alongside other Secure Connect Gateway vulnerabilities.

Critical Impact
Successful exploitation exposes confidential information handled by the Secure Connect Gateway, which brokers support telemetry and remote connections between Dell infrastructure and Dell backend services.

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
Deployments referenced by CPE cpe:2.3:a:dell:secure_connect_gateway (application and virtual)

Discovery Timeline

2026-09-09 - CVE-2026-79731 published to the National Vulnerability Database
2026-09-09 - Last updated in NVD database
2026-09-09 - Dell releases security update DSA-2026-382

Technical Details for CVE-2026-79731

Vulnerability Analysis

Dell Secure Connect Gateway is the remote support and telemetry broker deployed as either a virtual appliance or an installable application on customer infrastructure. The affected releases embed static credentials within the product distribution. Because these credentials are identical across every deployment of the vulnerable versions, an attacker who obtains them once can reuse them against any exposed SCG instance.

The vulnerability is classified under [CWE-798: Use of Hard-coded Credentials]. Exploitation results in information exposure rather than integrity or availability loss, aligning with the CVSS confidentiality-only impact. The attack path requires network reachability to the gateway but does not require prior valid user credentials on the target.

Root Cause

The root cause is the inclusion of static authentication material inside the SCG codebase or configuration. Hard-coded credentials cannot be rotated by administrators without a vendor patch, and their presence in shipped binaries means any party that reverse-engineers the appliance can extract them.

Attack Vector

An unauthenticated attacker with network access to a vulnerable Secure Connect Gateway instance submits requests using the embedded credentials. The high attack complexity reflected in the CVSS vector indicates that additional conditions such as specific network positioning or timing must be satisfied. Successful requests return sensitive data managed by the gateway.

No public proof-of-concept exploit is available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Technical specifics beyond the vendor advisory have not been published.

// No verified proof-of-concept code is available for CVE-2026-79731.
// Refer to Dell advisory DSA-2026-382 for vendor-supplied technical detail.

Detection Methods for CVE-2026-79731

Indicators of Compromise

Authentication events on the SCG management or API interfaces originating from unexpected source IP addresses, especially external networks.
Unusual data-retrieval requests to SCG endpoints outside of scheduled Dell support telemetry windows.
Repeated successful logins that do not correlate with any provisioned administrative account activity.

Detection Strategies

Inventory all Dell SCG 5.0 Appliance and Application instances and record their current version strings against 5.36.00.16 and 5.36.00.00 respectively.
Enable and forward SCG audit logs to a central log platform to correlate authentication and API access events.
Restrict network reachability to the SCG management interfaces so that anomalous access attempts are visible and can be alerted on at the firewall or reverse proxy layer.

Monitoring Recommendations

Monitor outbound and inbound traffic to the SCG for volume anomalies that could indicate bulk data exfiltration.
Alert on any authentication to SCG from IP ranges outside the documented Dell support infrastructure and internal management subnets.
Track version and patch status of SCG appliances as part of ongoing vulnerability management reporting.

How to Mitigate CVE-2026-79731

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.
Restrict inbound network access to SCG management interfaces to trusted administrative subnets only.
Review SCG authentication and access logs for suspicious activity dating back to the deployment of the vulnerable version.

Patch Information

Dell published fixed builds in advisory Dell Security Update DSA-2026-382. The advisory covers CVE-2026-79731 along with additional vulnerabilities addressed in the same release. Apply the vendor-supplied update rather than attempting manual credential changes, since the credentials are embedded in the product itself.

Workarounds

No vendor-supplied workaround eliminates the hard-coded credentials without applying the patch.
Reduce exposure by placing the SCG behind network segmentation that permits access only from required management hosts and Dell support endpoints.
Disable or block any unused SCG network services to shrink the reachable attack surface until patching is complete.

bash

# Example: restrict inbound access to SCG management ports using iptables
# Replace 10.0.0.0/24 with your authorized management subnet
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP