CVE-2026-87251: Critical severity Oracle Access Manager vulnerability

Published Oct 20, 2026

Updated

Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via SAML to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected Software

3 affected components

Oracle Access Manager=12.2.1.4.0, =14.1.2.1.0

Oracle Access Manager=12.2.1.4.0

Oracle Access Manager=14.1.2.1.0

Event History

Oct 20, 2026

CVE Published

via MITRE·09:23 PM

Data Sourced

via MITRE·09:23 PM

DescriptionSeverity

Data Sourced

via NVD·10:20 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

Which deployments are affected?

Oracle Access Manager Authentication Engine deployments running supported versions 12.2.1.4.0 or 14.1.2.1.0 are affected.

What access does an attacker need to exploit this issue?

An attacker does not need authentication or user interaction. They need network access to the Oracle Access Manager Authentication Engine through SAML.

What is the likely impact of successful exploitation?

Successful exploitation can result in takeover of Oracle Access Manager, with high impacts to confidentiality, integrity, and availability.