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Security Bulletin: TS4500 Tape Library addresses security vulnerability CVE-2025-36252

Security Bulletin


Summary

The Web UI did not generate a new session identifier following successful user authentication, allowing a pre-authentication session identifier to remain associated with the authenticated session. An attacker who could obtain or cause a user's browser to use a known session identifier before authentication could potentially hijack the authenticated session and access the application with the user's privileges. The issue has been resolved by generating a new session identifier after successful authentication, preventing the pre-authentication session from being reused as an authenticated session.

Vulnerability Details

CVEID:   CVE-2025-36252
DESCRIPTION:   IBM TS4500 Tape Library/Diamondback Tape Library does not invalidate session which could allow an authenticated user to impersonate another user on the system.
CWE:   CWE-613: Insufficient Session Expiration
CVSS Source:   IBM
CVSS Base score:   6.3
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

Affected Product(s)Version(s)
Storage TS4500 Library1.1.1.6 - 1.12.0.3

Remediation/Fixes

For the 1.12.0 release, upgrade to firmware version 1.12.0.4 Fix Pack or later, available from IBM Fix Central http://www-933.ibm.com/support/fixcentral/. 
 
All future releases will include the fix for this vulnerability.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

14 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:
14 October 2026

Initial Publish date:
14 October 2026

UID

ibm17292611