CVE-2025-36047: IBM WebSphere Application Server Liberty denial of service

Published Aug 14, 2025
·
Updated

IBM WebSphere Application Server Liberty 18.0.0.2 through 25.0.0.8 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 memory resources.

Affected Software

10 affected components
IBM WebSphere Application Server Liberty>=18.0.0.2<=25.0.0.8
All of the following
IBM WebSphere Application Server>=18.0.0.2<25.0.0.9
Any of the following
Apple macOS
IBM AIX
IBM i
IBM Z\/os
Linux Linux kernel
Microsoft Windows
IBM Controller<=11.1.0 - 11.1.1
IBM Cognos Controller<=11.0.0 - 11.0.1 FP6

Remediation

Information

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH66953. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature. To determine if the HTTP/2 protocol is enabled with Liberty Servlet features see HTTP/2 Support for Liberty. For IBM WebSphere Application Server Liberty 18.0.0.2 - 25.0.0.8 using the servlet-3.1, servlet-4.0, servlet-5.0, or servlet-6.0 feature(s) with the HTTP/2 protocol enabled: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH66953 --OR-- · Apply Liberty Fix Pack 25.0.0.9 or later (targeted availability 3Q2025). Additional interim fixes may be available and linked off the interim fix download page.

Event History

Aug 14, 2025
CVE Published
via MITRE·03:38 PM
Data Sourced
via MITRE·03:38 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software
Dec 4, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-36047?

The severity of CVE-2025-36047 is categorized as a Denial of Service vulnerability.

2

How do I fix CVE-2025-36047?

To mitigate CVE-2025-36047, upgrade IBM WebSphere Application Server Liberty to a version later than 25.0.0.8.

3

What versions of IBM WebSphere Application Server Liberty are affected by CVE-2025-36047?

CVE-2025-36047 affects IBM WebSphere Application Server Liberty versions from 18.0.0.2 to 25.0.0.8.

4

What can an attacker do with CVE-2025-36047?

An attacker can exploit CVE-2025-36047 to send specially-crafted requests that cause the server to consume excessive memory resources, leading to denial of service.

5

Is CVE-2025-36047 remotely exploitable?

Yes, CVE-2025-36047 is remotely exploitable, allowing attackers to execute the attack from a remote location.

Company

Resources

Contact

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