CVE-2020-4576

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-01 · updated 2026-06-17

Description

IBM WebSphere Application Server 7.5, 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: 184428.

Affected products

IBM WebSphere Application Server: from 7.0.0.0 before 7.0.0.45; from 8.0.0.0 before 8.0.0.15; from 8.5.0.0 before 8.5.5.19; from 9.0.0.0 before 9.0.5.6 — fixed in 7.0.0.45, 8.0.0.15, 8.5.5.19, 9.0.5.6

How to fix

Upgrade to a fixed version: IBM WebSphere Application Server 7.0.0.45, 8.0.0.15, 8.5.5.19, 9.0.5.6. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/184428
https://www.ibm.com/support/pages/node/6339807
https://exchange.xforce.ibmcloud.com/vulnerabilities/184428
https://www.ibm.com/support/pages/node/6339807

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