IBM Support

Security Bulletin: Multiple Vulnerabilities in IBM® Java SDK affect WebSphere Application Server July 2021 CPU

Security Bulletin


There are multiple vulnerabilities in the IBM® SDK, Java™ Technology Edition that is shipped with IBM WebSphere Application Server. These might affect some configurations of IBM WebSphere Application Server Traditional, IBM WebSphere Application Server Liberty and IBM WebSphere Application Server Hypervisor Edition. These products have addressed the applicable CVEs. If you run your own Java code using the IBM Java Runtime delivered with this product, you should evaluate your code to determine whether the complete list of vulnerabilities is applicable to your code. For a complete list of vulnerabilities, refer to the link for "IBM Java SDK Security Bulletin" located in the References section for more information. HP fixes are on a delayed schedule.

Vulnerability Details

CVEID:   CVE-2021-2369
DESCRIPTION:   An unspecified vulnerability in Java SE related to the Library component could allow an unauthenticated attacker to cause no confidentiality impact, low integrity impact, and no availability impact.
CVSS Base score: 4.3
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
WebSphere Application Server9.0
WebSphere Application Server8.5
WebSphere Application Server LibertyContinuous delivery


For WebSphere Application Server Liberty:

  Upgrade to IBM SDK, Java Technology Edition Version 8 SR6 FP35 refer to IBM Java SDKs for Liberty

For Version 9 WebSphere Application Server Traditional:

Update to the IBM SDK, Java Technology Edition, Version 8 Service Refresh 6 FP35 using the instructions in the IBM Knowledge Center Installing and updating IBM SDK, Java Technology Edition on distributed environments then use the IBM Installation Manager to access the online product repositories to install the SDK or use IBM Installation Manager and access the packages from Fixcentral.

For V8.5.0.0 through WebSphere Application Server Traditional and WebSphere Application Server Hypervisor Edition: 

For the IBM SDK, Java Technology Version that you use, upgrade to the minimal fix pack level of WebSphere Application Server as noted in the interim fix below then apply the interim fixes:

For IBM SDK Java Technology Edition Version 7

  • Apply interim fix PH39448: Will upgrade you to IBM SDK, Java Technology Edition, Version 7 Service Refresh 10 Fix Pack 90. 

For IBM SDK Java Technology Edition Version 7R1

  • Apply interim fix PH39447: Will upgrade you to IBM SDK, Java Technology Edition, Version 7R1 Service Refresh 4 Fix Pack 90.

For IBM SDK Java Technology Edition Version 8 SR6 FP35

  • For environments that have been upgraded to use the new default IBM SDK Version 8 bundled with WebSphere Application Server Fix Pack or later: Apply interim fix PH39446: Will upgrade you to IBM SDK, Java Technology Edition, Version 8 Service Refresh 6 FP35. 


  • Apply IBM Java SDK shipped with WebSphere Application Server Fix pack 21 ( or later (targeted availability 1Q 2022).
For Application Client for WebSphere Application Server:

Follow instructions above for the WebSphere Application Server to download the interim fix needed for your version of the Application Client.

Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

13 Aug 2021: Initial Publication
18 Aug 2021: Updated Reference section

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location


[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Component":"Liberty","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"},{"code":"PF035","label":"z\/OS"},{"code":"PF017","label":"Mac OS"}],"Version":"9.0, 8.5, Liberty","Edition":"Advanced,Base,Developer,Enterprise,Express,Network Deployment,Single Server, Liberty","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
18 August 2021