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CVE-2026-87171 – Unauthenticated Data Disclosure/Manipulation – Oracle Hyperion Financial Management

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Summary

CVE-2026-87171 is a high-severity vulnerability in the Security component of Oracle Hyperion Financial Management that allows an unauthenticated, network-based attacker to compromise the application over HTTPS. Oracle rates it as "difficult to exploit," but successful exploitation can result in unauthorized creation, deletion, or modification of critical data, as well as unauthorized disclosure of all data accessible to Oracle Hyperion Financial Management. The flaw carries a CVSS v3.1 base score of 8.7 and includes a scope change, meaning a successful attack may impact resources beyond the vulnerable component itself.

Technical details

  • Root cause: A weakness in the Security component of Oracle Hyperion Financial Management that permits unauthorized access without valid credentials.
  • Trigger conditions: Exploitation requires network access via HTTPS to the affected Hyperion Financial Management deployment; Oracle classifies attack complexity as High, indicating the attacker must satisfy specific conditions or timing to succeed.
  • Attack vector: Network (remote), requiring no authentication (PR:N) and no user interaction (UI:N).
  • Impact: Confidentiality and Integrity impacts are both rated High; Availability is not affected. The scope change (S:C) indicates the vulnerability could impact additional Oracle products beyond Hyperion Financial Management itself, potentially allowing unauthorized creation, deletion, or modification of data as well as disclosure of all data the application can access.

Affected software

  • Oracle Hyperion Financial Management, version 11.2.26.0.000

Severity

  • CVSS v3.1 Base Score: 8.7 (High)
  • CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate: Apply the fix provided by Oracle in the September 2026 Critical Security Patch Update (CSPUSEP2026) for Oracle Hyperion Financial Management 11.2.26.0.000. Organizations should consult Oracle’s advisory for the specific patch identifiers applicable to their environment and apply them as soon as possible.
  • If patching cannot be performed immediately: Restrict network access to Oracle Hyperion Financial Management to trusted internal networks only, and ensure HTTPS endpoints are not unnecessarily exposed to the public internet. Monitor access logs for anomalous or unauthenticated requests to the Security component as a compensating control until the patch can be applied.

References

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