CVE-2026-21810 in BigFix Quantum Risk Analyzer
Summary
by MITRE • 08/27/2026
HCL BigFix Quantum Risk Analyzer is affected by a hardcoded external resource reference and a lack of binary integrity which could allow an attacker to obtain sensitive information or modify the binary.
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Analysis
by VulDB Data Team • 08/27/2026
The vulnerability identified in HCL BigFix Quantum Risk Analyzer stems from two critical architectural deficiencies: the use of hardcoded references for external resources and insufficient verification of binary integrity during execution. These flaws collectively undermine the foundational security principles required for enterprise-grade risk analysis software, creating a pathway for attackers to compromise data confidentiality and system integrity. The presence of hardcoded external resource references indicates that the application relies on fixed paths or URLs to fetch necessary components, configuration files, or libraries at runtime rather than embedding them securely within the application package or verifying their source authenticity. This approach assumes that the environment in which the software operates is trusted and unmodified, an assumption that fails when attackers gain access to the local file system or network traffic interception capabilities.
From a technical perspective, the lack of binary integrity checks means that the Quantum Risk Analyzer does not validate the cryptographic signature or hash of its executable files against known good values before loading them into memory. This omission allows for classic substitution attacks where an adversary can replace legitimate binaries with malicious versions containing backdoors, keyloggers, or remote access tools. Since BigFix is a critical component in many enterprise IT infrastructure environments used for endpoint management and security monitoring, compromising its integrity effectively grants the attacker a high-privilege foothold within the network. The combination of these two issues creates a synergistic risk where an attacker can not only inject malicious code but also potentially manipulate external dependencies to exfiltrate sensitive data or disrupt operational continuity without triggering standard anomaly detection mechanisms that rely on signature-based checks rather than integrity verification.
The operational impact of this vulnerability is severe, particularly for organizations relying on Quantum Risk Analyzer for continuous compliance and risk assessment. An attacker exploiting the hardcoded resource reference could redirect requests to a malicious server controlled by them, leading to data exfiltration or man-in-the-middle attacks that intercept sensitive security telemetry. Simultaneously, the ability to modify binaries allows for persistent access mechanisms that survive reboots and standard patch cycles if not properly monitored. This compromises the trustworthiness of the risk analysis outputs themselves, as an attacker could alter reports to hide vulnerabilities or highlight non-existent ones, thereby misleading security operations centers into making incorrect remediation decisions. The attack vector aligns with CWE-209, which describes exposure of sensitive information through error messages or improper handling, and CWE-345 regarding insufficient verification of data authenticity. Furthermore, the exploitation technique maps to MITRE ATT&CK techniques such as T1608 (Link Exploitation for Initial Access) if external resources are leveraged, and more critically T1059 (Command and Scripting Interpreter) or T1204 (User Execution) via binary substitution.
Mitigation strategies must focus on hardening the deployment environment and enforcing strict integrity controls. Administrators should ensure that all software updates from HCL include patches addressing these specific flaws, as vendor-provided builds typically incorporate proper code signing and secure resource loading mechanisms. In the interim, organizations can implement file integrity monitoring solutions to detect unauthorized changes to Quantum Risk Analyzer binaries in real-time. Network segmentation should be enforced to restrict outbound connections for the application, preventing it from reaching untrusted external resources if hardcoded references are exploited. Additionally, enabling strict execution policies that verify digital signatures before allowing any binary to run on endpoints will significantly reduce the risk of successful exploitation. Regular audits of installed software versions and validation against vendor advisories remain essential practices to maintain a secure posture in environments utilizing HCL BigFix Quantum Risk Analyzer.