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CVE-2026-87200 – Unauthenticated Data Tampering – Oracle Hyperion Financial Management 11.2.26.0.000

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Summary

CVE-2026-87200 is a high-severity, remotely exploitable vulnerability in the Security component of Oracle Hyperion Financial Management. It allows an unauthenticated attacker with network access via HTTP to compromise the application, resulting in unauthorized creation, deletion, or modification of critical data, as well as partial disruption of service availability. Oracle rates this vulnerability 8.2 (High) on the CVSS v3.1 scale.

Technical details

  • Root cause: A flaw in the Security component of Oracle Hyperion Financial Management that fails to properly enforce authentication/authorization controls on certain HTTP-accessible functionality.
  • Attack vector: Network (AV:N) — the vulnerability is remotely exploitable over HTTP and does not require any prior authentication (PR:N) or user interaction (UI:N).
  • Attack complexity: Low (AC:L) — Oracle classifies this as an easily exploitable vulnerability.
  • Trigger conditions: An attacker sends crafted requests to an exposed Oracle Hyperion Financial Management instance; no valid credentials or victim interaction are needed.
  • Impact: The vulnerability yields no confidentiality impact, but High integrity impact (unauthorized creation, deletion, or modification of critical data) and Low availability impact (partial denial of service).

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:N/I:H/A:L

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 deployed Hyperion Financial Management instances and apply the corresponding patch as soon as possible, per Oracle’s guidance.
  • If patching cannot be performed immediately: Restrict network exposure of Oracle Hyperion Financial Management to trusted internal networks only, and place the application behind a properly configured firewall/VPN or web application firewall to limit unauthenticated HTTP access from untrusted networks until the patch can be applied.
  • Oracle strongly recommends that customers apply Critical Security Patch Update fixes as soon as possible, since attacks reported in the wild have often exploited known vulnerabilities that remain unpatched.

References

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