CVE-2026-79638: Dell SCG 5.0 XSS via alternate syntax neutralization bypass

CVE-2026-79638 · Severity: medium · CVSS 5.3 · Published 2026-09-09

Dell Secure Connect Gateway (SCG) 5.0 is a network access control appliance and application used to manage secure remote connections. A flaw in how the application filters cross-site scripting (XSS) attacks allows an unauthenticated remote attacker to inject malicious scripts, potentially compromising user sessions or stealing sensitive data accessed through the gateway.

Technologies: Dell Secure Connect Gateway 5.0 Appliance, Dell Secure Connect Gateway 5.0 Application. Vendors: Dell.

Quick answers

Is CVE-2026-79638 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-79638 being exploited in the wild.
How severe is CVE-2026-79638?
Medium severity, with a CVSS score of 5.3, published 9 September 2026.
Which products and versions are affected?
Dell Secure Connect Gateway 5.0 Appliance prior to 5.36.00.16; Dell Secure Connect Gateway 5.0 Application prior to 5.36.00.00.
Is there a fix for CVE-2026-79638?
A patch was published on 2026-09-09: Patches available: SCG 5.0 Appliance 5.36.00.16 and Application 5.36.00.00 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-79638 attacked?
It is attacked over the network.
Am I affected by CVE-2026-79638?
Check whether you run Dell Secure Connect Gateway 5.0 Appliance or Dell Secure Connect Gateway 5.0 Application at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an improper neutralization of alternate XSS syntax—the application fails to properly sanitize user input against non-standard XSS payloads. This is a reflected or stored XSS vulnerability where the input validation logic does not account for alternate encoding or syntax variations of JavaScript. An unauthenticated attacker with network access to the SCG interface can craft a specially designed request containing an XSS payload, which bypasses the inadequate input filters. Successful exploitation allows script injection into the application context, enabling session hijacking, credential theft, or malware distribution. Patches are available in SCG 5.0 Appliance 5.36.00.16+ and Application 5.36.00.00+.

Affected products

  • Dell Secure Connect Gateway 5.0 Appliance prior to 5.36.00.16
  • Dell Secure Connect Gateway 5.0 Application prior to 5.36.00.00

Timeline

  • 2026-09-09: disclosed: Published on NVD and Dell advisory DSA-2026-382
  • 2026-09-09: patched: Patches available: SCG 5.0 Appliance 5.36.00.16 and Application 5.36.00.00

References

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