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Vulnerability record · CVE-2020-4589 · published 13 August 2020

CVE-2020-4589: Ibm websphere application server deserialization of untrusted data vulnerability

Ibm · Websphere Application Server

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.

9.8 CVSS 3.1 Critical EPSS 8.5% · top 5.2% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 10.0
8.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://exchange.xforce.ibmcloud.com/vulnerabilities/184585 VDB EntryVendor Advisory
https://www.ibm.com/support/pages/node/6258333 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/184585 VDB EntryVendor Advisory
https://www.ibm.com/support/pages/node/6258333 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-4589), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.