CVE-2025-33090: IBM Concert

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

IBM Concert Software 1.0.0 through 1.1.0 could allow a remote attacker to cause a denial of service using a specially crafted regular expression that would cause excessive resource consumption.

Affected products

• IBM Concert: from 1.0.0, before 2.0.0 (fixed in 2.0.0)

Published 2025-08-18. Last modified 2026-06-17.