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Security Bulletin: IBM Controller is vulnerable to exposure of sensitive information

Security Bulletin


Summary

There is a vulnerability in IBM Controller due to the use of hardcoded cryptographic keys for signing session cookies. This Security Bulletin addresses CVE-2025-36326.

Vulnerability Details

CVEID:   CVE-2025-36326
DESCRIPTION:   IBM Controller could allow an attacker to obtain sensitive information due to the use of hardcoded cryptographic keys for signing session cookies.
CWE:   CWE-321: Use of Hard-coded Cryptographic Key
CVSS Source:   IBM
CVSS Base score:   3.7
CVSS Vector:   (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Controller11.1.0 - 11.1.1
IBM Cognos Controller11.0.0 - 11.0.1 FP6 

Remediation/Fixes

It is strongly recommended that you apply the most recent security updates:
    
Affected Product(s)Version(s)Fix
IBM Controller11.1.0 - 11.1.1Download IBM Controller 11.1.2 from Passport Advantage
IBM Cognos Controller11.0.0 - 11.0.1 FP6Download IBM Cognos Controller 11.0.1 FP7 from Fix Central


IBM Controller 11.1.2 and IBM Cognos Controller 11.0.1 FP7 are available for Cloud deployments.

 

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

14 Jan 2026: Added additional fix information and removed the mitigation
20 Oct 2025: Included steps for fixing the patch in the Interim fix (11.0.1 FP6 IF1)
25 Sep 2025: 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 January 2026

UID

ibm17246015