CVE-2021-38951: IBM WebSphere Application Server

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume all available CPU resources. IBM X-Force ID: 211405.

Affected products

• IBM WebSphere Application Server: version 7.0 only; version 8.0 only; version 8.5 only; version 9.0 only

Published 2021-12-09. Last modified 2026-06-17.