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Oracle's October 2026 CPU and outlets including Cyberpress confirm the CVSS 10.0 flaw in Oracle Access Manager Authentication Engine affecting versions 12.2.1.4.0 and 14.1.2.1.0.

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Home/Security/Oracle Access Manager hit by CVSS 10 critical flaw
VERIFIEDBy Xavier Rivera·Wednesday, October 21, 2026 at 7:46 AM AST·1 min read

Oracle Access Manager hit by CVSS 10 critical flaw

Oracle disclosed CVE-2026-87337, a CVSS 10.0 flaw in Access Manager versions 12.2.1.4.0 and 14.1.2.1.0 that allows unauthenticated remote attackers to compromise data confidentiality and integrity. The maximum-severity issue carries scope change and affects the Authentication Engine component of Oracle Fusion Middleware.

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Oracle Access Manager hit by CVSS 10 critical flaw
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Oracle has disclosed a critical vulnerability in its Access Manager product that carries a maximum severity score.

Oracle rates the flaw at maximum severity. Oracle as the CNA assigns the vulnerability CVE-2026-87337 a CVSS 3.1 base score of 10.0. The score reflects full network accessibility without authentication or user interaction.
An unauthenticated remote attacker can exploit the issue to gain unauthorized creation, deletion, or modification of critical data.

The flaw resides in the Authentication Engine component of Oracle Fusion Middleware. It affects versions 12.2.1.4.0 and 14.1.2.1.0.

Attackers need only network access via HTTP. An unauthenticated remote attacker can exploit the issue to gain unauthorized creation, deletion, or modification of critical data. The same access also grants complete reading of all Oracle Access Manager accessible data.
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The vulnerability carries a scope change, meaning successful exploitation can significantly affect additional products beyond Access Manager itself. Confidentiality and integrity impacts are rated high while availability remains unaffected.
The vulnerability carries a scope change, meaning successful exploitation can significantly affect additional products beyond Access Manager itself.

Oracle published the advisory on its security site. The company lists the issue in its October 2026 security alert. Administrators should review the referenced Oracle security alert for mitigation steps.
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No other versions or Oracle products receive mention in the record.
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