CVE-2026-14974: IBM WebSphere Application Server

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 8.5, and 9.0 traditional could allow a remote attacker to execute arbitrary code caused by unsafe deserialization of untrusted data.

Affected products

• IBM WebSphere Application Server: from 8.5.0.0, before 8.5.5.31 (fixed in 8.5.5.31); from 9.0.0.0, before 9.0.5.29 (fixed in 9.0.5.29)

Published 2026-07-28. Last modified 2026-08-05.