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CVE-2026-87229 – Unauthenticated Access & Data Integrity Compromise – Oracle Hyperion Financial Mana

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Summary

CVE-2026-87229 is a high-severity vulnerability in the Security component of Oracle Hyperion Financial Management. The flaw allows an unauthenticated, network-based attacker to bypass authentication over HTTP and gain unauthorized access to the application, enabling creation, deletion, and modification of data along with limited disclosure of sensitive financial information. Oracle disclosed the issue with a CVSS v3.1 base score of 8.2 (High) as part of its September 2026 Critical Security Patch Update.

Technical details

  • Root cause: A weakness in Hyperion Financial Management’s authentication mechanism permits access to the application without valid credentials.
  • Trigger conditions: An attacker only needs network reachability to the application’s HTTP interface; no prior authentication or user interaction is required.
  • Attack vector: Remote, over HTTP (Network attack vector, Low attack complexity, no privileges or user interaction required).
  • Impact: Successful exploitation results in high integrity impact — attackers can create, modify, or delete data within Hyperion Financial Management — plus low confidentiality impact (partial unauthorized read access to data). No availability impact was reported.

Affected software

  • Oracle Hyperion Financial Management, version 11.2.26.0.000

Severity

  • CVSS v3.1 Base Score: 8.2 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Mitigation and recommended actions

  • Immediate: Apply the fix provided by Oracle in the September 2026 Critical Security Patch Update for Oracle Hyperion Financial Management version 11.2.26.0.000. Organizations should identify all Hyperion Financial Management instances and apply Oracle’s published patch as soon as possible, per standard Oracle Critical Patch Update guidance.
  • If immediate patching is not possible: Restrict network exposure of Hyperion Financial Management’s HTTP interface to trusted internal networks or VPN only; do not expose it directly to the internet. Place the application behind a properly configured reverse proxy/WAF that enforces authentication, and monitor access logs for unauthenticated or anomalous requests to Hyperion endpoints until the patch can be applied.

References

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