Security Bulletin
Summary
IBM Virtualization Engine TS7700 is susceptible to Denial of Service (CVE-2026-21945), Tampering (CVE-2026-21932), Information Disclosure (CVE-2026-21933, CVE-2026-21925) and Elevation of Privilege (CVE-2026-1188) threats due to the use of IBM Semeru Runtime and IBM SDK, Java Technology Edition. IBM Semeru Runtime and IBM SDK, Java Technology Edition are used by TS7700 to provide the Management Interface and for enhanced service access.
Vulnerability Details
CVEID: CVE-2026-21945
DESCRIPTION: Java SE is vulnerable to a denial of service, caused by an easily exploitable vulnerability issue that allows an remote attacker to cause a hang or repeatable crash of the application.
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-2026-21932
DESCRIPTION: Java SE could allow a remote attacker to bypass security controls and create, delete, or modify critical data or all accessible data, caused by an easily exploitable vulnerability.
CVSS Source: secalert_us@oracle.com
CVSS Base score: 7.4
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N)
CVEID: CVE-2026-21933
DESCRIPTION: Java SE could allow a remote attacker to bypass security controls and perform unauthorized update, insert, delete, or read operations on accessible data, caused by an easily exploitable vulnerability.
CVSS Source: secalert_us@oracle.com
CVSS Base score: 6.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVEID: CVE-2026-21925
DESCRIPTION: Java SE could allow a remote unauthenticated attacker to bypass security controls and perform unauthorized update, insert, delete, or read operations on accessible data, caused by an difficult to exploit vulnerability.
CVSS Source: secalert_us@oracle.com
CVSS Base score: 4.8
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVEID: CVE-2026-1188
DESCRIPTION: In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names of all supported processor features was not accounting for the separator inserted between processor features. If the output buffer supplied to this function was incorrectly sized, failing to account for the separator when determining when a write to the buffer was safe could lead to a buffer overflow. This issue is fixed in Eclipse OMR version 0.8.0.
CWE: CWE-131: Incorrect Calculation of Buffer Size
CVSS Source: NVD
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM System Storage Virtualization Engine TS7700 | 3957-VED |
| IBM System Storage Virtualization Engine TS7700 | 3948-VED |
| IBM System Storage Virtualization Engine TS7700 | 3948-VEF |
All versions of microcode for the IBM Virtualization Engine TS7700 (3957-VED, 3948-VED and 3948-VEF) prior to and including the following are affected:
| Machine Type | Model | Release | Version |
| 3957 | VED | R5.4 | 8.54.2.17 |
| R6.0 | 8.60.0.116 | ||
| R6.1 | 8.61.0.60 | ||
| 3948 | VED | R5.4 | 8.54.2.17 |
| R6.0 | 8.60.0.116 | ||
| R6.1 | 8.61.0.60 | ||
| VEF | R6.0 | 8.60.0.116 | |
| R6.1 | 8.61.0.60 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by visiting https://tape.ibmrcl.enterpriseappointments.com/v2/ or contacting IBM Service at 1-800-IBM-SERV to arrange an upgrade to the latest microcode version followed by the installation of the appropriate VTD_EXEC as needed. Minimum microcode versions are shown below:
| Machine Type | Model | Release | Fix |
| 3957 | VED | R5.4 | Upgrade to 8.54.2.17 + VTD_EXEC.269 |
| R6.0 | Upgrade 8.60.0.115 + VTD_EXEC.269 - OR - Upgrade 8.60.0.116 + VTD_EXEC.269 | ||
| R6.1 | Upgrade to 8.61.0.60 + VTD_EXEC.269 | ||
| 3948 | VED | R5.4 | Upgrade to 8.54.2.17 + VTD_EXEC.269 |
| R6.0 | Upgrade 8.60.0.115 + VTD_EXEC.269 - OR - Upgrade 8.60.0.116 + VTD_EXEC.269 | ||
| R6.1 | Upgrade to 8.61.0.60 + VTD_EXEC.269 | ||
| VEF | R6.0 | Upgrade 8.60.0.115 + VTD_EXEC.269 - OR - Upgrade 8.60.0.116 + VTD_EXEC.269 | |
| R6.1 | Upgrade to 8.61.0.60 +VTD_EXEC.269 |
The minimum VTD_EXEC version is shown below:
| VTD_EXEC Package | Version |
| VTD_EXEC.269 | v3.01 |
Installation Details
| Concurrent | Yes |
| Local Machine State | Online; Offline; Service |
| Remote Machine State | Online; Offline; Service |
| Time of Installation | Anytime |
| Installation Time Required (mins) | 30 |
Workarounds and Mitigations
Although IBM recommends that you upgrade to the fixes identified above, you can mitigate, but not eliminate the risk of these vulnerabilities by restricting physical and network access to the TS7700 to authorized users and IBM Service Personnel only.
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References
Acknowledgement
Change History
27 Apr 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:
27 April 2026
Initial Publish date:
27 April 2026
UID
ibm17270715