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Security Bulletin: IBM® Db2® is affected by multiple vulnerabilities in IBM Semeru (July 2026 CPU)

Security Bulletin


Summary

There are vulnerabilities in IBM Runtime Environment Java™ Version 8.0.8.65 and earlier, and IBM Semeru Version 21.0.11.0 and earlier used by IBM® Db2®. These issues were disclosed as part of the IBM Java SDK updates in July 2026.

Vulnerability Details

CVEID:   CVE-2026-46917
DESCRIPTION:   Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE.
CWE:   CWE-284: Improper Access Control
CVSS Source:   secalert_us@oracle.com
CVSS Base score:   5.3
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID:   CVE-2026-46968
DESCRIPTION:   Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE accessible data.
CWE:   CWE-284: Improper Access Control
CVSS Source:   secalert_us@oracle.com
CVSS Base score:   5.9
CVSS Vector:   (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

 

Affected Product(s)Version(s)Applicable Editions
DB211.5.0 - 11.5.9Client and Server
DB212.1.0 - 12.1.5Client and Server

Remediation/Fixes

The recommended solution is to apply the appropriate fix for this vulnerability.

The fix for this vulnerability is in the latest version of IBM Semeru

Affected IBM Semeru, Java Technology Edition, Version:

  • 8.0.8.65 and earlier
  • 21.0.11.0 and earlier
  • Earlier releases (7.0, 6, 5.0, 1.4.2, 1.3.1, 1.2.2 etc.) may also be affected, but they are no longer supported.

 

Fixes for applicable vulnerabilities are included in IBM Semeru, Java Technology Edition:

Customers running any affected level of an affected Program, can download the security update containing the interim fix for this issue from Fix Central.

IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Published Security Vulnerabilities for DB2 for Linux, UNIX, and Windows including Security Update information

Acknowledgement

Change History

08 Oct 2026: 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.

Disclaimer

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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
08 October 2026

Initial Publish date:
08 October 2026

UID

ibm17291616

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