CVE-2026-67102 in BigFix Service Management
Summary
by MITRE • 09/18/2026
HCL BigFix Service Management is affected by a high-severity Broken Access Control vulnerability, which could allow a low-privileged user to gain unauthorized access to administrative screens and functions reserved for higher-privileged roles.
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Analysis
by VulDB Data Team • 09/18/2026
The identified vulnerability in HCL BigFix Service Management represents a critical failure in the implementation of role-based access control mechanisms within the application's security architecture. This flaw, classified under CWE-269 as Improper Privilege Control, allows an attacker with low-level privileges to bypass intended restrictions and interact with administrative interfaces that are strictly reserved for users holding higher privilege levels. In enterprise environments where BigFix is deployed for endpoint management and IT service delivery, such a breach in access control logic undermines the fundamental principle of least privilege, potentially exposing sensitive configuration data, allowing unauthorized modification of system policies, or enabling further lateral movement within the network infrastructure.
From a technical perspective, this vulnerability likely stems from insufficient server-side validation of user roles during request processing. While client-side controls may visually hide administrative menus for lower-privileged users, the underlying API endpoints and backend logic fail to verify that the authenticated session possesses the necessary permissions before executing actions or rendering sensitive data. This discrepancy between perceived access rights enforced by the user interface and actual enforcement at the application layer creates a significant attack vector. An adversary can exploit this by manipulating HTTP requests directly, bypassing any client-side checks, thereby gaining direct access to administrative functions such as managing users, deploying patches, or altering security configurations without authorization.
The operational impact of this vulnerability is severe due to its high severity rating and the critical nature of the affected software. BigFix Service Management serves as a central hub for IT operations, handling incident management, change requests, and asset inventory data. Unauthorized access by low-privileged users can lead to significant disruptions in service availability, integrity compromise of managed endpoints, and potential exfiltration of confidential organizational data. Furthermore, this vulnerability aligns with MITRE ATT&CK technique T1078, Valid Accounts, specifically when combined with privilege escalation tactics where an attacker leverages existing credentials to access resources they should not have permission to view or modify. The ability to manipulate administrative functions could allow the creation of backdoor accounts, alteration of audit logs to cover tracks, or deployment of malicious scripts across managed endpoints under the guise of legitimate system administration tasks.
Mitigation strategies must focus on immediate remediation and long-term architectural improvements. Administrators should apply vendor-provided patches that address this specific access control flaw as a top priority given its high severity rating. In addition to patching, organizations should implement strict network segmentation to limit exposure of the BigFix management console to only necessary administrative workstations. It is also advisable to enforce multi-factor authentication for all administrative accounts and review existing user roles to ensure that privilege assignments are aligned with actual job requirements rather than default configurations. Regular security audits focusing on access control logic, including penetration testing that specifically targets broken object level authorization flaws, will help identify similar vulnerabilities before they can be exploited by malicious actors seeking to compromise the integrity of the IT service management environment.