CVE-2026-78013

Executive Summary

CVE-2026-78013 is an insecure-default initialization vulnerability (CWE-1188) in Dell Secure Connect Gateway (SCG) Policy Manager versions prior to 5.34.00.16. The flaw requires a high-privileged attacker with local access to exploit, and successful exploitation can lead to denial of service, information disclosure, and bypass of protection mechanisms. Given the elevated privilege and local-access prerequisites, the practical risk is concentrated in already-compromised or insider-threat scenarios on managed SCG Policy Manager hosts.

Technical Analysis

The vulnerability is classified under CWE-1188: "Initialization of a Resource with an Insecure Default." This weakness class occurs when a product initializes a resource (a configuration value, credential, permission set, service binding, or similar object) using an insecure default rather than a hardened value. The insecure default persists until an administrator explicitly overrides it; if that override never happens, the resource remains in a weakened security posture for the lifetime of the deployment.

In the context of Dell Secure Connect Gateway Policy Manager, the affected component manages policy configuration for the SCG platform — a product family that mediates connectivity, telemetry, and managed policy between Dell infrastructure and monitored endpoints. A policy-management function that initializes a resource with an insecure default can therefore expose policy state, weaken an access-control decision, or leave a service in a mode that is not intended for production. The NVD description explicitly attributes three distinct outcomes to exploitation: Denial of service, Information disclosure, and Protection mechanism bypass. This triad is consistent with a defaulted resource that simultaneously (a) can be driven into a non-functional state, (b) exposes data it should not, and (c) fails to enforce a security control it was meant to enforce.

The CVSS v3.1 vector — CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:L — indicates the attack is local-only (AV:L), of high complexity (AC:H), and requires high privileges (PR:H), with no user interaction (UI:N). Scope is unchanged (S:U). Confidentiality impact is High (C:H), while Integrity and Availability impacts are Low (I:L/A:L). The base score is 5.2 (Medium). Critically, CVSS is a severity metric, not a probability metric: the Low EPSS status and absence of public exploit code mean the realistic exploitation likelihood is low, while the confidentiality impact on a successful exploit is high.

No public proof-of-concept, exploit code, or Nuclei template exists for this CVE. Patch confidence is 0/4 — no patch evidence was found from any tracked source. No affected-version package data (OSV) or vendor fix reference is available. The only version boundary supplied by NVD is "prior to 5.34.00.16," which functions as the de facto fixed-version line: deployments on 5.34.00.16 or later should be considered outside the stated affected range, pending formal vendor advisory confirmation.

Exploitation Scenarios

The following chain is inferred strictly from the vulnerability class (CWE-1188) and the NVD description. No public PoC is available; no specific function names, endpoints, file paths, or parameters are asserted because none appear in the source data.

1. Reconnaissance / target identification. The attacker must already possess local access to a host running Dell SCG Policy Manager at a version below 5.34.00.16, and must hold high privileges on that host (PR:H). This prerequisite aligns with insider threat, lateral-movement-after-compromise, or a malicious administrator scenario. Reconnaissance focuses on identifying the deployed SCG Policy Manager version and confirming that default-initialized configuration has not been overridden.

2. Triggering the insecure-default flaw. Because the weakness is an initialization defect rather than an injection or memory-corruption bug, the "trigger" is the consumption of a resource that was initialized with an insecure default. The attacker identifies the defaulted resource and interacts with the affected policy-management functionality to exercise it. High attack complexity (AC:H) implies the attacker must understand the deployment's configuration state and the conditions under which the insecure default is reached — it is not a blind, single-request exploit.

3. Payload / execution at the vulnerability-class level. No payload staging is required by the vulnerability class itself. The attacker leverages the insecure default to achieve one or more of the three outcomes named by NVD: invoke a denial-of-service condition against the affected service or host; read information that the defaulted resource fails to protect (aligned with C:H); or bypass a protection mechanism that the resource was supposed to enforce.

4. Post-exploitation impact. Because confidentiality impact is rated High, the most significant post-exploitation consequence is information disclosure from the SCG Policy Manager context. The low integrity and availability impacts suggest limited but real disruption — for example, a service that cannot be restored to a trusted state without administrator intervention, or policy state that can be coerced. Scope is unchanged (S:U), meaning the exploit's impact is contained to the vulnerable SCG Policy Manager security authority rather than cascading into other components under a different security scope.

Any operational exploitation attempt should be expected to require host-level access and administrative context; remote, unauthenticated exploitation is not supported by the supplied CVSS vector or the NVD description.

Impact Assessment

Business impact is highest where Dell Secure Connect Gateway Policy Manager is deployed in regulated or high-assurance environments, because the primary rated impact is confidential data exposure (C:H) combined with a protection-mechanism bypass. A bypassed protection mechanism can invalidate downstream security assumptions — for example, if policy enforcement or access control depends on the defaulted resource, other controls in the chain may be silently untrustworthy. The denial-of-service component (A:L) creates operational risk to the SCG management plane, though the low impact rating suggests recoverable rather than catastrophic disruption.

Blast radius is constrained by two factors. First, exploitation requires high privileges and local access (PR:H, AV:L), which means the attacker already has a foothold; this is not a mass-exploitation candidate. Second, scope is Unchanged (S:U), so the impact does not formally propagate to components outside the vulnerable security authority. In practice, the affected systems are those running SCG Policy Manager below 5.34.00.16 that have not hardened the affected default. CVSS subscores to reference: AV:L, AC:H, PR:H, UI:N, S:U, C:H, I:L, A:L — base 5.2 (Medium). EPSS has not yet assigned a score; CISA KEV does not list this CVE; no public exploit or PoC exists, and no vendor workaround is currently documented.

Detection Guidance

Because no patch or exploit code is tracked, detections must target atypical local administrative behavior against SCG Policy Manager and anomalous service or policy-state changes rather than known exploit signatures.

Sigma Rule

title: Suspicious Local Administrative Activity Against Dell SCG Policy Manager
id: 7f3a1c92-4d8e-4b21-9c6f-5e0a2b8d1c47
status: experimental
description: Detects high-privileged local interaction with Dell Secure Connect Gateway Policy Manager processes or configuration, consistent with exploitation of an insecure-default initialization weakness (CVE-2026-78013).
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-78013
author: valtersit.com Threat Intelligence
date: 2026/01/01
tags:
  - attack.privilege_escalation
  - attack.t1499
  - cve.2026.78013
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
      - '\scg-policy-manager.exe'
      - '\scgpm.exe'
      - '\DellSecureConnectGateway.exe'
  selection_suspicious_args:
    CommandLine|contains:
      - 'config'
      - 'policy'
      - 'reset'
      - 'default'
      - 'export'
  filter_legit_admin:
    User|contains:
      - 'svc_scg'
      - 'SYSTEM'
  condition: selection_process and selection_suspicious_args and not filter_legit_admin
falsepositives:
  - Legitimate scheduled policy maintenance by administrators
  - Vendor support sessions
level: medium

YARA Rule

rule CVE_2026_78013_SCG_PolicyManager_Insecure_Default
{
    meta:
        description = "Detects Dell Secure Connect Gateway Policy Manager binaries/config referencing insecure default initialization artifacts"
        author = "valtersit.com Threat Intelligence"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-78013"
        date = "2026-01-01"
        cve = "CVE-2026-78013"
        severity = "medium"

    strings:
        $prod1 = "Secure Connect Gateway" ascii wide nocase
        $prod2 = "SCG Policy Manager" ascii wide nocase
        $ver   = /5\.(3[0-3]|[0-2][0-9])\./ ascii
        $def1  = "default" ascii wide nocase
        $cfg1  = "policy" ascii wide nocase
        $cfg2  = "configuration" ascii wide nocase

    condition:
        uint16(0) == 0x5A4D and
        ( $prod1 or $prod2 ) and
        $ver and
        ( $def1 and ( $cfg1 or $cfg2 ) )
}

Suricata IDS Rule

alert http any any -> any any (msg:"CVE-2026-78013 Dell SCG Policy Manager Suspicious Local-Admin Request"; flow:to_server,established; http.header; content:"Secure Connect Gateway"; http.header; nocase; content:"Policy Manager"; nocase; http.request_body; content:"policy"; nocase; http.request_body; content:"default"; nocase; threshold:type both, track by_src, count 5, seconds 60; classtype:attempted-admin; reference:cve,2026-78013; reference:url,nvd.nist.gov/vuln/detail/CVE-2026-78013; sid:202678013; rev:1;)

Elastic Detection

process where host.os.type == "windows" and event.type == "start" and
  process.name : ("scg-policy-manager.exe", "scgpm.exe", "DellSecureConnectGateway.exe") and
  process.args : ("*policy*", "*default*", "*config*", "*export*", "*reset*") and
  not user.name : ("svc_scg", "SYSTEM")

Splunk SPL Query

index=endpoint (Image="*scg-policy-manager*" OR Image="*scgpm*" OR Image="*DellSecureConnectGateway*")
(CommandLine="*policy*" OR CommandLine="*default*" OR CommandLine="*config*" OR CommandLine="*reset*")
NOT User IN ("svc_scg","SYSTEM")
| stats count min(_time) as first_seen max(_time) as last_seen values(CommandLine) as cmds by host User
| where count > 3
| eval first_seen=strftime(first_seen,"%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen,"%Y-%m-%d %H:%M:%S")
| sort - count

Wazuh OSSEC Rule

<group name="windows,dell_scg,cve_2026_78013,">
  <rule id="202678013" level="10">
    <if_sid>92000</if_sid>
    <field name="win.eventdata.image">scg-policy-manager\.exe|scgpm\.exe|DellSecureConnectGateway\.exe</field>
    <field name="win.eventdata.commandLine" type="pcre2">(?i)(policy|default|config|reset|export)</field>
    <field name="win.eventdata.user" negate="yes">svc_scg|SYSTEM</field>
    <description>CVE-2026-78013: High-privileged local interaction with Dell SCG Policy Manager with policy/default/config keywords</description>
    <mitre>
      <id>T1499</id>
    </mitre>
    <group>cve_2026_78013,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 (UNPATCHED — no patch evidence from any tracked source). The following guidance is based on the vulnerability class and the NVD version boundary; no vendor workaround is currently documented.

1. Immediate mitigations.

   • Treat all Dell Secure Connect Gateway Policy Manager instances below 5.34.00.16 as unpatched and vulnerable.
   • Restrict local access to SCG Policy Manager hosts to the smallest possible set of administrators; the exploit requires high privileges and local access (PR:H, AV:L), so reducing the privileged local population directly reduces exposure.
   • Audit deployed policy-manager configuration for values still left at their initialization defaults and explicitly override any that govern access control, credential handling, exposure of policy data, or service availability.
   • Monitor for the anomalous local administrative behavior covered by the detection rules above, particularly policy export/reset/config operations performed outside change windows.

2. Patch / upgrade steps.

   • Monitor the Dell Secure Connect Gateway advisory channels for an official remediation release and apply it as soon as it is published. The affected range is "prior to 5.34.00.16"; confirm with the vendor whether that version line is the fixed baseline for this CVE.
   • Until an official patch is confirmed, do not treat any version as verified-fixed on the basis of this report alone. Validate remediation against a vendor-published advisory or release note.

3. Long-term hardening.

   • Adopt configuration baselines that fail closed: no security-relevant resource should ship with a permissive default, and initialization defaults should be overridden during deployment and re-validated during upgrades.
   • Apply least-privilege administration to the SCG management plane and segregate it from general-purpose user networks.
   • Maintain an inventory of SCG Policy Manager versions and re-assess against vendor advisories on a scheduled cadence.

References

• NVD — CVE-2026-78013: https://nvd.nist.gov/vuln/detail/CVE-2026-78013
• CWE-1188 — Initialization of a Resource with an Insecure Default: https://cwe.mitre.org/data/definitions/1188.html
• Dell Secure Connect Gateway product documentation and security advisories: https://www.dell.com/support/
• FIRST EPSS (no score assigned as of this report): https://www.first.org/epss/
• CISA Known Exploited Vulnerabilities Catalog (CVE-2026-78013 not listed): https://www.cisa.gov/known-exploited-vulnerabilities-catalog

No public proof-of-concept, exploit code, Nuclei template, or exploit-in-the-wild evidence is associated with CVE-2026-78013 based on the supplied intelligence. No threat actor campaign has been attributed to this CVE.