CVE-2025-36326Network attack vector

Sensitive information exposure via hard-coded signing keys

Published Sep 26, 2025 · Updated Sep 26, 2025

IBM Cognos Controller 11.0.0 through 11.0.1 and IBM Controller 11.1.0 through 11.1.1 allow remote attackers to read sensitive data. The session-cookie signing implementation uses cryptographic keys embedded in the product instead of installation-specific secrets. Exploitation requires network access and overcoming a high-complexity condition that IBM does not further describe; the reported consequence is sensitive-data disclosure only.

CVSS severity3.7
Low
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IBM Cognos Controller 11.0.0 through 11.0.1 and IBM Controller 11.1.0 through 11.1.1 allow remote attackers to read sensitive data. The session-cookie signing implementation uses cryptographic keys embedded in the product instead of installation-specific secrets. Exploitation requires network access and overcoming a high-complexity condition that IBM does not further describe; the reported consequence is sensitive-data disclosure only.

The record

CVE
CVE-2025-36326
Published
Sep 26, 2025
Updated
Sep 26, 2025
Vendor
IBM
Product
IBM Controller
Classifications
CWE-321
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.0.0 <=11.0.1
  2. Affected versionversion=11.1.0 <=11.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Controllerversion=11.0.0 <=11.0.1; version=11.1.0 <=11.1.1

Published CVSS scores

3.7IBMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-321Use of Hard-coded Cryptographic Key

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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