IBM Concert: Remote command injection (CVE-2026-6715)

IBM Concert versions 1.0 through 3.0.1.1 contain a critical command injection vulnerability (CVE-2026-6715). The flaw arises when the application incorporates user-supplied input into operating system commands without adequate validation. This allows unauthenticated remote attackers to execute arbitrary system commands with the privileges of the affected service. A proof-of-concept exploit is publicly available.

Impact

Successful exploitation allows for full system compromise, including unauthorized access to data, modification of system configurations, and potential denial of service. The vulnerability is rated with a CVSS score of 9.8.

Recommendation

• Inventory all instances of IBM Concert in the environment.
• Apply the vendor-provided security patches referenced in the IBM support page immediately.
• Until patching is complete, restrict network access to the management interface of IBM Concert to trusted internal IP ranges.
• Monitor web server access logs for suspicious input patterns, including shell metacharacters such as semicolon, pipe, ampersands, or backticks in request parameters directed at the application API.