CVE-2026-6928

9.8

IBM · Concert

IBM Concert versions 1.0.0 through 3.0.0 contain a use after free vulnerability that allows unauthenticated attackers to corrupt memory, crash the application, or execute arbitrary code.

Executive summary

A critical use after free vulnerability in IBM Concert allows unauthenticated remote attackers to achieve arbitrary code execution.

Vulnerability

The application suffers from a use after free vulnerability (CWE-416) that occurs when memory is accessed after it has been freed. This flaw can be triggered by an unauthenticated attacker via crafted input to achieve remote code execution.

Business impact

The vulnerability carries a CVSS score of 9.8, reflecting its critical severity due to the lack of required authentication and the potential for full system compromise. Successful exploitation could lead to unauthorized access to sensitive data, complete loss of system integrity, and significant operational downtime.

Remediation

Immediate Action: Upgrade IBM Concert to version 3.0.1.1 immediately as recommended by the vendor.

Proactive Monitoring: Review application access logs for unusual patterns or unexpected crashes that may indicate exploitation attempts.

Compensating Controls: Implement network segmentation and restrict access to the IBM Concert interface to trusted IP addresses only, reducing the attack surface.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Given the critical nature of this vulnerability and the potential for remote code execution, organizations should prioritize the update to version 3.0.1.1. Testing and deployment of this patch should be conducted as an urgent maintenance item to protect the integrity and availability of the affected environment.

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History

  1. Disclosed CVE record published
  2. Collected by CVE Brief via github
  3. Analyst report written
  4. Published in the daily brief critical section

Sources