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CVE-2026-87230 – Unauthenticated Remote Compromise (RCE-level Data Tampering) – Oracle Hyperion Fina

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Summary

CVE-2026-87230 is a critical, easily exploitable vulnerability in the Security component of Oracle Hyperion Financial Management. It allows a completely unauthenticated, remote attacker with only network access via HTTP to fully compromise the application, gaining the ability to create, delete, or modify critical financial data and to read all data the application can access. Oracle has rated this issue the maximum CVSS v3.1 base score of 10.0, reflecting its network attack vector, lack of any authentication or user interaction requirement, and scope change to other components.

Technical details

  • Root cause: A flaw in the Security component of Oracle Hyperion Financial Management that fails to properly enforce access controls, allowing unauthorized actions to be performed without any credentials.
  • Trigger conditions: An attacker only needs network-level (HTTP) reachability to the vulnerable Hyperion Financial Management instance — no valid account, session, or user interaction is required.
  • Attack vector: Remote, over the network (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N).
  • Impact: Successful exploitation results in unauthorized creation, deletion, or modification of critical data, plus unrestricted read access to all Hyperion Financial Management data. The CVSS "Scope: Changed" designation indicates the impact can extend beyond the vulnerable component itself.

Affected software

  • Oracle Hyperion Financial Management, version 11.2.26.0.000

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate: Apply the fix provided in Oracle’s September 2026 Critical Security Patch Update (CSPU) for Oracle Hyperion Financial Management. Organizations should confirm the specific patched release number with Oracle Support and their Fusion Middleware/EPM administrators, since Oracle distributes fixes as patch bundles rather than incremental point releases.
  • If immediate patching is not possible:
    • Restrict network access to Hyperion Financial Management to trusted internal networks only; do not expose the application directly to the internet.
    • Place the application behind a web application firewall or reverse proxy with strict access controls while patch deployment is planned.
    • Monitor Hyperion Financial Management logs for unexpected data creation, deletion, or modification activity, and for anomalous unauthenticated HTTP requests.
    • Prioritize this patch above routine cycles given the CVSS 10.0 rating and unauthenticated network exploitability.

References

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