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CVE-2026-87231 – Unauthenticated Remote Compromise (Confidentiality/Integrity/Availability) – Oracle

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Summary

CVE-2026-87231 is a high-severity vulnerability in the Security component of Oracle Hyperion Financial Management. It allows an unauthenticated attacker with network access via HTTP to compromise the application, and successful exploitation can result in a full loss of confidentiality, integrity, and availability of the affected system. Oracle disclosed the flaw as part of its September 2026 Critical Patch Update.

Technical details

  • Root cause: A flaw in the Security component of Oracle Hyperion Financial Management that permits an attacker to compromise the application; Oracle has not published low-level technical root-cause detail (e.g., the specific weakness class/CWE) beyond the component name.
  • Trigger conditions: The vulnerability is reachable over the network via HTTP and, per Oracle’s advisory language, is rated as "difficult to exploit," implying non-trivial preconditions or attacker effort (CVSS Attack Complexity: High) are needed to achieve reliable exploitation.
  • Attack vector: Network (AV:N) — no authentication (PR:N) and no user interaction (UI:N) are required for an attacker to attempt exploitation.
  • Impact: If successfully exploited, the vulnerability can lead to complete compromise of the Hyperion Financial Management deployment, with high impact to confidentiality, integrity, and availability (C:H/I:H/A:H) and no change in scope (S:U).

Affected software

  • Oracle Hyperion Financial Management, version 11.2.26.0.000

Severity

  • CVSS v3.1 Base Score: 8.1 (High)
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply the fix provided in Oracle’s September 2026 Critical Patch Update for Oracle Hyperion Financial Management. Organizations should follow Oracle’s official advisory to identify and install the specific patch corresponding to their deployed release.
  • If patching cannot be applied immediately: Restrict network exposure of Hyperion Financial Management HTTP interfaces to trusted internal networks or VPN-only access, and monitor for anomalous requests to the application until the patch can be applied. There is no vendor-confirmed workaround in lieu of patching, so restricting network reachability should be treated as a temporary compensating control only.

References

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