# CVE-2026-79639: Dell Secure Connect Gateway improper certificate validation

Source: https://junglewise.ai/threats/cve-2026-79639-dell-secure-connect-gateway-improper-certificate-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-07. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-79639 · Severity: high · CVSS 7.6 · Published 2026-09-07

Dell Secure Connect Gateway is a network access control appliance used to manage secure remote connections and protect network perimeters. The improper certificate validation vulnerability allows remote attackers to bypass security controls and gain unauthorized access to the system without authentication, potentially enabling lateral movement into protected networks.

Technologies: [Dell Secure Connect Gateway 5.0 Appliance](https://junglewise.ai/threats/technologies/secure-connect-gateway-5-0-appliance), [Dell Secure Connect Gateway 5.0 Application](https://junglewise.ai/threats/technologies/secure-connect-gateway-5-0-application). Vendors: [Dell](https://junglewise.ai/threats/vendors/dell).

## Quick answers

**Is CVE-2026-79639 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-79639 being exploited in the wild.

**How severe is CVE-2026-79639?** High severity, with a CVSS score of 7.6, published 7 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-2026-79639?** A patch was published on 2026-09-07: DSA-2026-382 security update available Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-79639 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-79639?** 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

CVE-2026-79639 is an improper certificate validation vulnerability in Dell Secure Connect Gateway (SCG) 5.0, affecting both the Appliance (before 5.36.00.16) and Application (before 5.36.00.00) components. An unauthenticated remote attacker can exploit this flaw by sending specially crafted requests that bypass certificate validation checks, leading to unauthorized access. The vulnerability requires only network reachability with no authentication or user interaction. A patch is available through Dell's security update DSA-2026-382.

## 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

- 2026-09-07: disclosed
- 2026-09-07: patched: DSA-2026-382 security update available

## References

- [https://www.dell.com/support/kbdoc/en-in/000503426/dsa-2026-382-security-update-for-dell-secure-connect-gateway-virtual-edition-multiple-vulnerabilities?msockid=3021cac2195069ed3194ddad186a68f9](https://www.dell.com/support/kbdoc/en-in/000503426/dsa-2026-382-security-update-for-dell-secure-connect-gateway-virtual-edition-multiple-vulnerabilities?msockid=3021cac2195069ed3194ddad186a68f9)

## Related threats

- [Dell SCG 5.0 cross-site scripting in alternate XSS syntax](https://junglewise.ai/threats/cve-2026-79946-dell-scg-5-0-cross-site-scripting-in-alternate-xss-syntax)
- [Dell Secure Connect Gateway command injection vulnerability](https://junglewise.ai/threats/cve-2026-79741-dell-secure-connect-gateway-command-injection-vulnerability)
- [Dell Secure Connect Gateway OS command injection](https://junglewise.ai/threats/cve-2026-78484-dell-secure-connect-gateway-os-command-injection)
- [Dell Secure Connect Gateway command injection](https://junglewise.ai/threats/cve-2026-79941-dell-secure-connect-gateway-command-injection)
- [Dell Secure Connect Gateway improper neutralization of escape sequences](https://junglewise.ai/threats/cve-2026-79964-dell-secure-connect-gateway-improper-neutralization-of-escape)