CVE-2026-76769

Executive Summary

CVE-2026-76769 is a Missing Authorization (CWE-862) vulnerability affecting Dell Secure Connect Gateway (SCG) Policy Manager versions prior to 5.34.00.16. A low-privileged attacker with remote network access can exploit insufficient authorization checks to perform actions beyond their assigned permissions, resulting in elevation of privileges. The vulnerability is rated CVSS 4.3 (Medium), has no public proof-of-concept, no Nuclei template, and is not listed in CISA KEV, indicating no confirmed in-the-wild exploitation at the time of writing.

Technical Analysis

The vulnerability is classified as CWE-862: Missing Authorization. This weakness class occurs when an application fails to perform an authorization check before allowing access to a resource or action. In the context of Dell Secure Connect Gateway (SCG) Policy Manager, the affected component exposes functionality that does not adequately verify whether the authenticated, low-privileged user is entitled to invoke a given operation.

The NVD description explicitly states: "Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains a Missing Authorization vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Elevation of privileges."

Key technical characteristics derived strictly from the supplied data:

• Attack Vector (AV:N): The vulnerability is exploitable remotely over the network. No local access or physical presence is required.
• Attack Complexity (AC:L): No specialized conditions, race conditions, or significant attacker effort are required; the authorization check is simply absent or bypassable under normal conditions.
• Privileges Required (PR:L): The attacker must hold a valid low-privileged account on the SCG Policy Manager. This is not an unauthenticated vulnerability.
• User Interaction (UI:N): No victim user action is needed for exploitation.
• Scope (S:U): The impact remains within the same security authority — exploitation does not cross a privilege boundary into a separate component's authority per the CVSS definition.
• Confidentiality (C:L): There is a limited confidentiality impact. This is noteworthy because the CNA's narrative mentions "elevation of privileges," yet the CVSS vector assigns no Integrity (I:N) or Availability (A:N) impact and only a low confidentiality impact. Analysts should treat the practical impact as bounded by the CVSS subscores: the demonstrated impact is primarily unauthorized read/exposure of information the low-privileged user should not access, even though the description frames it as privilege elevation.

Insufficient technical detail is available from the NVD description to identify specific endpoints, API parameters, method names, or the precise resource that lacks an authorization check. No public advisory text beyond the NVD entry was provided. Consequently, this report describes the vulnerability at the class level: a missing server-side authorization gate on an operation reachable by an authenticated low-privileged user.

Because the affected product is a gateway/policy management appliance, the general attack surface includes its administrative web interface and the network services it exposes. Attackers do not require knowledge of a specific code flaw (such as a buffer overflow); they require only the ability to reach an operation that the application fails to protect with an authorization check.

Exploitation Scenarios

No public PoC, Nuclei template, or exploit code is available. The attack chain below is inferred from the vulnerability class (CWE-862, Missing Authorization) and the CVSS vector, and does not assert specific implementation details not present in the source data.

1. Reconnaissance / Target Identification The attacker identifies internet- or intranet-accessible Dell Secure Connect Gateway (SCG) Policy Manager instances running a version prior to 5.34.00.16. Enumeration may be performed via network scanning (e.g., identifying the management interface by its HTTP title/banner) or by leveraging existing knowledge of the environment. Because AV:N applies, no local foothold on the appliance host is required.

2. Triggering the Flaw The attacker obtains or already possesses a low-privileged account (consistent with PR:L). Using that session, the attacker sends a request to an operation within Policy Manager that should be restricted to a higher-privileged role but which lacks an authorization check. This is the defining behavior of CWE-862: the request is processed without the application validating the caller's entitlements.

3. Payload / Execution Method (class level) At the vulnerability-class level, the "payload" is a legitimate, well-formed request directed at the under-protected operation — no memory corruption, injection string, or shellcode is implied. The attacker simply invokes functionality they are not authorized to use. Because AC:L and UI:N apply, repeated attempts and automation are feasible.

4. Post-Exploitation Impact Successful exploitation results in elevation of privileges as described by the CNA, and per the CVSS subscores yields a limited confidentiality impact (unauthorized access to data). Given I:N and A:N, the vector does not assert that the attacker can modify data or disrupt availability within the scoring scope. In practice, privilege elevation on a management gateway could be a stepping stone to further access, but such downstream effects are not confirmed by the provided data and should be treated as speculative.

Note: "No public PoC available; attack chain is inferred from vulnerability class."

Impact Assessment

• Business impact: A missing authorization flaw in a security gateway's policy manager can undermine the trust boundary that the gateway is meant to enforce. A low-privileged user gaining unauthorized access or elevated capability within the management plane may weaken the integrity of the policies the appliance governs.
• Affected systems: Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16. No package-level (OSV) or precise version list is provided beyond this threshold.
• Blast radius: Scoped to deployments of the affected product reachable by an attacker holding a low-privileged account. The CVSS Scope:Unchanged (S:U) metric indicates the impact stays within the same security authority rather than cascading to other components.
• CVSS interpretation: Base score 4.3 (Medium). The low confidentiality impact (C:L), network vector (AV:N), low complexity (AC:L), and low privileges required (PR:L) combine to a moderate score. The absence of integrity and availability impact limits the severity rating despite the "elevation of privileges" wording in the CNA description.
• Exploit maturity: No PoC, no exploit code, no Nuclei template, and no CISA KEV entry. EPSS is not yet scored. This suggests limited observed exploitation activity, but the lack of a public exploit does not preclude private or targeted abuse.
• CISA KEV: NO — not listed, so it is not a known exploited vulnerability per CISA at this time.

Detection Guidance

Sigma Rule

title: Potential Missing Authorization Abuse in Dell SCG Policy Manager
id: 3f9c2a7e-7676-4c1a-9b2d-767690000001
status: experimental
description: Detects anomalous access to Dell Secure Connect Gateway (SCG) Policy Manager operations by low-privileged accounts, consistent with CWE-862 missing authorization exploitation (CVE-2026-76769).
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-76769
author: valtersit.com
date: 2026-01-01
logsource:
  category: webserver
  product: dell_scg
detection:
  selection_title:
    cs-uri-stem|contains:
      - '/PolicyManager'
  selection_status:
    sc-status:
      - 200
      - 302
  selection_role:
    cs-username|contains:
      - 'lowpriv'
      - 'readonly'
      - 'guest'
  condition: selection_title and selection_status and selection_role
fields:
  - c-ip
  - cs-username
  - cs-uri-stem
  - cs-method
  - sc-status
falsepositives:
  - Legitimate read-only administrative activity
level: medium
tags:
  - attack.privilege_escalation
  - attack.t1068
  - cve.2026.76769

YARA Rule

rule CVE_2026_76769_SCG_Policy_Manager_Missing_Authz
{
    meta:
        description = "Detects references to Dell SCG Policy Manager inconsistent with CVE-2026-76769 missing authorization"
        author = "valtersit.com"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-76769"
        date = "2026-01-01"
        severity = "medium"
    strings:
        $p1 = "Secure Connect Gateway" ascii nocase
        $p2 = "Policy Manager" ascii nocase
        $v1 = "5.34.00.16" ascii nocase
    condition:
        uint16(0) == 0x5A4D or (any of ($p1, $p2) and $v1)
}

Suricata IDS Rule

alert http any any -> any any (msg:"CVE-2026-76769 Dell Secure Connect Gateway Policy Manager Potential Missing Authorization Access"; flow:established,to_server; http.header; content:"Policy Manager"; nocase; http.uri; content:"/PolicyManager"; nocase; classtype:attempted-user; reference:cve,2026-76769; reference:url,nvd.nist.gov/vuln/detail/CVE-2026-76769; sid:202676769; rev:1;)

Elastic Detection

sequence by user.name, source.ip with maxspan=5m
  [ authentication where event.outcome == "success" and user.name != null ]
  [ network where url.path : "/PolicyManager*" and http.response.status_code == 200 ]

Splunk SPL Query

index=web sourcetype=dell:scg:access
| search uri_path="/PolicyManager*" status=200
| stats count min(_time) as first_seen max(_time) as last_seen by src_ip user uri_path
| where count > 0
| 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
| table src_ip user uri_path count first_seen last_seen

Wazuh OSSEC Rule

<group name="dell_scg,web,">
  <rule id="767690" level="7">
    <decoded_as>web-accesslog</decoded_as>
    <field name="url">/PolicyManager</field>
    <description>CVE-2026-76769: Potential missing authorization access to Dell SCG Policy Manager</description>
    <mitre>
      <id>T1068</id>
    </mitre>
    <group>cve_2026_76769,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 (UNPATCHED — no patch evidence from any tracked source). No vendor fix, workaround, or affected-version package list was supplied by the tracked sources other than the version threshold (5.34.00.16).

1. Immediate mitigations (compensating controls):

• Restrict network exposure of the SCG Policy Manager interface to trusted management networks; do not expose it to the public internet.
• Enforce least privilege and audit low-privileged accounts. Review which accounts (PR:L) can reach the management interface.
• Apply network segmentation and firewall/ACL controls so only authorized administrators can reach the management UI.
• Enable detailed access logging and monitor for low-privileged users invoking operations outside their normal role (see Detection Guidance).
• Where supported, enforce role-based access control and verify that role checks are actually applied server-side; remove or disable any unused low-privileged accounts.

2. Patch / upgrade steps:

• No confirmed patch is available from tracked sources. Track the vendor's advisory channel for Dell Secure Connect Gateway (SCG) Policy Manager and apply the fixed release once published.
• The CNA description references versions "prior to 5.34.00.16"; confirm whether 5.34.00.16 or later resolves the issue directly with the vendor before treating it as fixed, since patch confidence is currently 0/4.
• Do not assume a workaround exists; none is documented in the supplied data.

3. Long-term hardening:

• Adopt a server-side authorization baseline: every sensitive operation must validate the caller's entitlements, not rely on UI hiding.
• Implement centralized, tamper-evident audit logging for privileged and low-privileged actions on management appliances.
• Establish a vulnerability management cadence that tracks CWE-862 class defects and validates authorization coverage during code/configuration review.
• Perform periodic access reviews and penetration testing against the management plane to identify missing authorization checks before attackers do.
• Maintain a patch SLA for internet- and management-facing infrastructure to reduce dwell time when fixes are released.

References

• NVD — CVE-2026-76769: https://nvd.nist.gov/vuln/detail/CVE-2026-76769
• CWE-862: Missing Authorization — https://cwe.mitre.org/data/definitions/862.html
• CISA Known Exploited Vulnerabilities Catalog (not listed; verify status): https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• FIRST EPSS (Not yet scored for this CVE): https://www.first.org/epss/
• Dell Security Advisories portal (consult for vendor advisory and fixed version 5.34.00.16 confirmation): https://www.dell.com/support/security

No known threat actor campaigns or exploit-in-the-wild evidence were provided. No public PoC, exploit code, or Nuclei template is available for CVE-2026-76769 at the time of writing.