IBM Support

Security Bulletin: IBM Java SDK and IBM Java Runtime for IBM i is affected by CVE-2020-2773

Security Bulletin


IBM® SDK Java™ Technology Edition and IBM® Runtime Environment Java™ is supported by IBM i. IBM i has addressed the applicable CVE.

Vulnerability Details

CVEID:   CVE-2020-2773
DESCRIPTION:   An unspecified vulnerability in Java SE related to the Java SE Security component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Affected Product(s)Version(s)
IBM i7.4
IBM i7.3
IBM i7.2
IBM i7.1


The issue can be fixed by applying a PTF to the IBM i Operating System.

Releases 7.4, 7.3, 7.2 and 7.1 of IBM i are supported and will be fixed. 
Please see the Java document at this URL for the latest Java information for IBM i:

The IBM i Group PTF numbers containing the fix for these CVEs follow.  Future Group PTFs for Java will also contain the fixes for these CVEs.

Release 7.4 – SF99665 level 10
Release 7.3 – SF99725 level 21
Release 7.2 – SF99716 level 31
Release 7.1 – SF99572 level 44

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

If you run your own Java code using the IBM Java Runtime delivered with this product, you should evaluate your code to determine whether additional Java vulnerabilities are applicable to your code. For a complete list of vulnerabilities, refer to the "Java SDK Security Vulnerabilities", located in the Reference section for more information.

Workarounds and Mitigations


Get Notified about Future Security Bulletins



Change History

25 Mar 2021: Initial Publication

*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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


[{"Type":"MASTER","Line of Business":{"code":"LOB57","label":"Power"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG60","label":"IBM i"},"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"7.1.0"}]

Document Information

Modified date:
26 March 2021