Security Bulletin
Summary
There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition,Versions 8** , Java 17 and Java 21 that are used by Rational Software Architect Designer and Rational Software Architect Designer for Websphere Software. These issues were disclosed as part of the IBM SDK, Java Technology Edition Quarterly CPU - Jul 2026 - Includes Oracle July 2026 CPU plus four additional vulnerabilities
Vulnerability Details
CVEID: CVE-2026-47057
DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Java SE.
CWE: CWE-400: Uncontrolled Resource Consumption
CVSS Source: secalert_us@oracle.com
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-47063
DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols 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: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
CVEID: CVE-2026-60147
DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Java SE accessible data as well as unauthorized read access to a subset of Java SE accessible data.
CWE: CWE-284: Improper Access Control
CVSS Source: secalert_us@oracle.com
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVEID: CVE-2026-47027
DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols 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-2026-47021
DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols 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-400: Uncontrolled Resource Consumption
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-2026-16439
DESCRIPTION: In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.
CWE: CWE-124: Buffer Underwrite ('Buffer Underflow')
CVSS Source: NVD
CVSS Base score: 9.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
CVEID: CVE-2026-16441
DESCRIPTION: In Eclipse OpenJ9 versions up to 0.60, when executing class files where a previously concrete superclass method has been recompiled as abstract, execution is incorrectly delegated to an interface default method.
CWE: CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
CVSS Source: NVD
CVSS Base score: 9.6
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
CVEID: CVE-2026-16243
DESCRIPTION: In Eclipse OMR versions up to 0.11, the arraycmp SIMD implementation for Z and P does not check if the number of bytes to compare is zero.
CWE: CWE-125: Out-of-bounds Read
CVSS Source: NVD
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| RSAD/RSAD4WS | 11.0 |
| RSAD/RSAD4WS | 10.0 |
| RSAD/RSAD4WS | 9.7 |
| RSAD/RSAD4WS | 9.6 |
Remediation/Fixes
Update the IBM SDK, Java Technology Edition of the product to address this vulnerability:
| Product | VRMF | Remediation/First Fix |
| Rational Software Architect Designer (RSAD) |
9.7 to 9.7.0.3 ,9.7.1 to 9.7.1.2
9.6 to 9.6.1.4 | IBM Java SDK/JRE 8 SR8 FP70 IFixes |
| Rational Software Architect Designer for WebSphere Software (RSAD4WS) |
9.7 to 9.7.0.3 ,9.7.1 to 9.7.1.2
9.6 to 9.6.1.4 | IBM Java SDK/JRE 8 SR8 FP70 IFixes |
| Rational Software Architect Designer (RSAD) |
10.0.0
| IBM Semeru JDK 17 SR20 FP0 Open Edition IFixes |
| Rational Software Architect Designer for WebSphere Software (RSAD4WS) |
10.0.0
| IBM Semeru JDK 17 SR20 FP0 Open Edition IFixes |
| Rational Software Architect Designer (RSAD) |
11.0.0
| IBM Semeru JDK 21 SR12 FP0 Open Edition IFixes |
| Rational Software Architect Designer for WebSphere Software (RSAD4WS) |
11.0.0
| IBM Semeru JDK 21 SR12 FP0 Open Edition IFixes |
Installation Instructions:
For instructions on installing this update using Installation Manager, review the topic Updating Installed Product Packages in the IBM Knowledge Center.
Instructions to download and install the update from the compressed files:
- Download the update files from Fix Central by following the link listed in the download table above
- Extract the compressed files in an appropriate directory.
For example, choose to extract to C:\temp\update
- Start IBM Installation Manager.
- On the Start page of Installation Manager, click File > Preferences, and then click Repositories. The Repositories page opens.
- On the Repositories page, click Add Repository.
- In the Add repository window, browse to or enter the file path to the repository.config file, which is located in the directory where you extracted the compressed files and then click OK.
For example, enter C:\temp\update\repository.config.
- Click OK to close the Preference page.
- Install the update as described in the the topic Updating Installed Product Packages in the IBM Knowledge Center for your product and version.
Note: For Installation of Java Ifix on Apple Silicon plz refer to Java21iFix-MAC-Silicon-InstallGuide.zip available under downloads
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
01 Sep 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:
01 October 2026
Initial Publish date:
01 September 2026
UID
ibm17285921