EUVD-2026-74765
GHSA-8rch-gvj4-jx7p
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
MITM network positioning requirement justifies AC:H; no credentials needed (PR:N); C:H for intercepted support credentials and telemetry; I:L/A:L for limited session manipulation and disruption.
Primary rating from Vendor (emc).
CVSS VectorVendor: emc
Lifecycle Timeline
3DescriptionCVE.org
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, contains an Improper Validation of Certificate with Host Mismatch vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.
AnalysisAI
Certificate hostname validation failure in Dell Secure Connect Gateway (SCG) 5.0 enables an unauthenticated remote attacker positioned as a network man-in-the-middle to present a valid TLS certificate for a different host, defeating the connection's trust model and gaining unauthorized access to intercepted communications. Both the Appliance variant (prior to 5.36.00.16) and Application variant (prior to 5.36.00.00) are confirmed affected per Dell DSA-2026-382. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must first achieve a network on-path (man-in-the-middle) position between the Dell SCG instance and its remote communication target - a significant prerequisite reflected in the AC:H CVSS metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The overall CVSS 7.0 with AC:H is a realistic calibration of this vulnerability: the attack is network-reachable and requires no credentials, but it demands the attacker first obtain a man-in-the-middle position - ARP spoofing on the support VLAN, BGP prefix hijack, or a rogue device on the network path - before the certificate flaw can be triggered. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: Appliance 5.36.00.16 and Application 5.36.00.00 per Dell DSA-2026-382 at https://www.dell.com/support/kbdoc/en-in/000503426/dsa-2026-382-security-update-for-dell-secure-connect-gateway-virtual-edition-multiple-vulnerabilities. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Dell SCG deployments and identify systems running Appliance versions prior to 5.36.00.16 or Application variants prior to 5.36.00.00; enable detailed certificate validation and TLS event logging, and configure network monitoring to flag anomalous certificate presentations on outbound SCG connections. …
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External POC / Exploit Code
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