Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-78491 – Improper Certificate Validation / Unauthorized Access – Dell Secure Connect Gateway

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-78491 is an improper certificate validation vulnerability (CWE-295) affecting Dell Secure Connect Gateway (SCG) 5.0. The flaw allows a remote, unauthenticated attacker to potentially gain unauthorized access to the system. It carries a High severity rating with a CVSS v3.1 base score of 8.2.

Technical details

  • Root cause: Dell SCG 5.0 fails to properly validate a certificate, classified under CWE-295 (Improper Certificate Validation).
  • Trigger conditions: No authentication or user interaction is required to attempt exploitation.
  • Attack vector: Network — the vulnerability is remotely exploitable (AV:N, AC:L, PR:N, UI:N).
  • Impact: Successful exploitation can lead to unauthorized access; the CVSS vector indicates no confidentiality impact, low integrity impact, and high availability impact (C:N/I:L/A:H).

Affected software

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

Severity

  • CVSS v3.1 Base Score: 8.2 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Mitigation and recommended actions

  • Immediate: Upgrade Dell Secure Connect Gateway 5.0 Application to version 5.36.00.00 or later, and Dell Secure Connect Gateway 5.0 Appliance to version 5.36.00.16 or later.
  • If patching is not immediately possible: Restrict network exposure of the SCG management/service interfaces to trusted networks only, and monitor for anomalous connection attempts until the upgrade can be applied.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw response body: <base href="/SecureConnectGateway/resx/">
  • Page title: Secure Connect Gateway

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge