CVE-2026-67100 HCL Software CVE debrief

Who should care

Defenders responsible for authentication, data protection, and vulnerability management in HCL BigFix Service Management deployments should assess exposure and prioritize remediation.

Why it matters

CVE-2026-67100 is a critical vulnerability in HCL BigFix Service Management that allows authenticated attackers to inject database commands and gain unauthorized access to sensitive system details and personal profile data. Defenders responsible for authentication, data protection, and vulnerability management should assess exposure and prioritize remediation.

• Potential unauthorized access to sensitive system details and personal profile data
• Possible data breaches due to Cross-Tenant Data Exposure
• Need for input validation and sanitization to prevent SQL Injection attacks
• Requirement for verifying and applying vendor-provided patches and updates

Technical summary

CVE-2026-67100 is a SQL Injection and Cross-Tenant Data Exposure vulnerability in HCL BigFix Service Management. An authenticated attacker can inject database commands to extract sensitive system details and manipulate request values to gain unauthorized access to full personal profile data and PII across different organizations. The vulnerability is caused by a lack of input validation and sanitization in the affected product. This allows attackers to inject malicious SQL code and gain unauthorized access to sensitive data. Defenders responsible for authentication, data protection, and vulnerability management should assess exposure and prioritize remediation.

Defensive priority

High priority for authentication and data protection

Recommended defensive actions

• Review and update authentication and authorization mechanisms
• Implement input validation and sanitization for database queries
• Monitor for suspicious activity and implement logging and auditing
• Verify and apply vendor-provided patches and updates
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

Official CVE Program record and NVD vulnerability detail indicate SQL Injection and Cross-Tenant Data Exposure flaws in HCL BigFix Service Management, allowing authenticated attackers to inject database commands and gain unauthorized access to sensitive system details and personal profile data.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.