CVE-2026-67106 in BigFix Service Management
Summary
by MITRE • 10/01/2026
HCL BigFix Service Management is affected by an Information Disclosure vulnerability because two exposed API endpoints return sensitive data. This information could enable an attacker to launch further, more serious attacks.
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Analysis
by VulDB Data Team • 10/03/2026
The identified security flaw within HCL BigFix Service Management represents a critical failure in access control mechanisms for specific application programming interface endpoints. This vulnerability falls under the category of improper privilege assignment and insecure direct object references, as classified by the Common Weakness Enumeration standard CWE-284 and CWE-613 respectively. The core technical issue stems from insufficient validation of user permissions before processing requests directed at two distinct API routes. Consequently, these endpoints are accessible to authenticated users who lack the necessary administrative privileges or specific role-based access rights required to view sensitive system data. This misconfiguration allows lower-privileged accounts to retrieve information that should be strictly confined to higher-level administrators or service management operators with explicit authorization levels.
The operational impact of this vulnerability is significant due to the nature of the data exposed through these endpoints. The returned information typically includes internal configuration details, user session tokens, system architecture specifics, or potentially credentials and identifiers related to managed assets within the BigFix infrastructure. By leveraging this unauthorized access, an attacker can perform reconnaissance activities that map out the environment's structure and identify potential entry points for more severe exploits. This aligns with the initial access and discovery tactics observed in the MITRE ATT&CK framework, specifically techniques such as Account Discovery T1087 and System Information Discovery T1082. The exposure of this data does not immediately result in remote code execution or direct system compromise but serves as a critical enabler for subsequent attack vectors.
Attackers can utilize the disclosed information to craft targeted phishing campaigns against privileged users, escalate privileges by identifying valid administrative accounts, or exploit other vulnerabilities that rely on specific internal knowledge such as API keys or database connection strings. The ability to gather this intelligence reduces the effort required for an adversary to plan a sophisticated intrusion campaign against the organization's IT infrastructure. In enterprise environments where BigFix is used for endpoint management and patch deployment, compromising these endpoints could lead to broader operational disruptions if combined with other vulnerabilities in the platform.
To mitigate this risk, immediate remediation should focus on enforcing strict role-based access control policies on all API endpoints within HCL BigFix Service Management. Administrators must verify that authentication mechanisms correctly validate user roles before granting access to sensitive data streams. It is recommended to apply any available patches or updates released by HCL Software that address these specific authorization flaws, as vendors typically resolve such issues through code corrections in subsequent service packs. Additionally, organizations should implement network-level controls such as web application firewalls to monitor and restrict API traffic based on user identity and request patterns. Regular security audits and penetration testing focused on access control logic are essential to ensure that no other endpoints suffer from similar misconfigurations. Monitoring logs for unusual access attempts to these specific APIs can also provide early warning indicators of exploitation attempts, allowing security teams to respond proactively before significant damage occurs.