CVE-2020-4589

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-08-13 · updated 2026-06-17
Weakness: CWE-502

Description

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects from untrusted sources. IBM X-Force ID: 184585.

Affected products

IBM WebSphere Application Server: from 7.0.0.0 through 7.0.0.45; from 8.0.0.0 through 8.0.0.15; from 8.5.0.0 through 8.5.5.17; from 9.0.0.0 through 9.0.5.4

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/184585
https://www.ibm.com/support/pages/node/6258333
https://exchange.xforce.ibmcloud.com/vulnerabilities/184585
https://www.ibm.com/support/pages/node/6258333

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