CVE-2020-4449: IBM WebSphere Application Server

High severity, CVSS 7.5. EPSS: 3.9% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 traditional could allow a remote attacker to obtain sensitive information with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181230.

Affected products

• IBM WebSphere Application Server: from 7.0.0.0, up to and including 7.0.0.45; from 8.0.0.0, up to and including 8.0.0.15; from 8.5.0.0, up to and including 8.5.5.17; from 9.0.0.0, up to and including 9.0.5.4

Published 2020-06-05. Last modified 2026-06-17.