CVE-2026-6730: IBM Concert

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM Concert 1.0.0 through 3.0.0 is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.

Affected products

• IBM Concert: from 1.0.0, up to and including 3.0.0

Published 2026-09-23. Last modified 2026-09-28.