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CVE-2026-73947 – Unauthenticated Remote Takeover – Oracle Access Manager 12.2.1.4.0 / 14.1.2.0.0

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Summary

CVE-2026-73947 is a critical, easily exploitable vulnerability in the Authentication Engine component of Oracle Access Manager, part of Oracle Fusion Middleware. It allows an unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager, with successful exploitation resulting in complete takeover of the product. The flaw carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: A flaw in the Authentication Engine component of Oracle Access Manager.
  • Trigger conditions: No authentication or user interaction is required to exploit the vulnerability.
  • Attack vector: Network-based, exploitable over HTTP against an exposed Oracle Access Manager instance.
  • Impact: Successful exploitation can result in full takeover of Oracle Access Manager, with high impact to confidentiality, integrity, and availability.

Affected software

  • Oracle Access Manager 12.2.1.4.0
  • Oracle Access Manager 14.1.2.0.0

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply the fixes provided by Oracle in the September 2026 Critical Patch Update for the affected Oracle Access Manager versions (12.2.1.4.0 and 14.1.2.0.0).
  • If patching cannot be applied immediately: Restrict network access to Oracle Access Manager management and authentication endpoints to trusted networks only, and monitor internet-facing instances closely until the patch can be applied. Oracle states that due to the ease of exploitation, patches should be applied as soon as possible.

References

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