CVE-2025-1991: IBM Informix Dynamic Server

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

IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.

Affected products

• IBM Informix Dynamic Server: version 12.10 only; version 14.10 only; version 15.0 only

Published 2025-06-28. Last modified 2026-06-17.