CVE-2020-4589

9.8 criticalEPSS 8.5%

Critical (9.8) in ibm websphere application server. EPSS 8.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 8.5% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)
CWE: CWE-502
Published: 2020-08-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ibm:websphere_application_server

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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