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CVE-2026-5065 IBM CVE debrief

IBM Controller versions 11.0.1, 11.1.0, 11.1.1, and 11.1.2 contain hard-coded credentials used for inbound authentication, outbound communication, or internal data encryption. The vulnerability was published on 2026-05-27 and carries a CVSS 3.1 score of 8.8 (HIGH). The weakness is categorized as CWE-798 (Use of Hard-coded Credentials). IBM has published a security bulletin with remediation guidance.

Vendor
IBM
Product
Controller
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-27
Original CVE updated
2026-05-27
Advisory published
2026-05-27
Advisory updated
2026-05-27

Who should care

Organizations running IBM Controller for financial consolidation, reporting, or planning; security teams managing enterprise financial systems; compliance officers responsible for credential management and access control policies

Technical summary

The vulnerability stems from embedded credentials within IBM Controller software that cannot be changed by administrators without vendor intervention. Hard-coded credentials may enable unauthorized access to application functions, decryption of sensitive data, or impersonation of the Controller in communications with external systems. The network-accessible attack vector and low complexity increase exposure risk for organizations running affected versions.

Defensive priority

HIGH

Recommended defensive actions

  • Review IBM security bulletin for official patch availability and deployment instructions
  • Inventory all IBM Controller deployments to identify affected versions (11.0.1, 11.1.0, 11.1.1, 11.1.2)
  • Apply vendor-provided patches or updates as soon as available
  • If patching is not immediately possible, restrict network access to IBM Controller administrative interfaces to trusted hosts only
  • Monitor authentication logs for anomalous access patterns that may indicate credential misuse
  • Rotate any credentials that may have been derived from or related to the hard-coded values
  • Verify that outbound communication from IBM Controller systems uses properly configured, non-default credentials

Evidence notes

The CVE description and IBM PSIRT reference confirm hard-coded credentials in specified IBM Controller versions. CVSS vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H indicates network-accessible attack vector with low attack complexity, low privileges required, and high impact on confidentiality, integrity, and availability.

Official resources

IBM disclosed this vulnerability via their Product Security Incident Response Team (PSIRT) with an official security bulletin.