CVE-2026-83054

Analyzed Analyzed - Analysis Complete

Oracle Internet Directory LDAP Server Authentication Bypass

Publication date: 2026-09-15

Last updated on: 2026-09-22

Assigner: Oracle

Description

Vulnerability in the Oracle Internet Directory product of Oracle Fusion Middleware (component: OID LDAP Server). 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 LDAP to compromise Oracle Internet Directory. Successful attacks of this vulnerability can result in takeover of Oracle Internet Directory. 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).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-15

Last Modified

2026-09-22

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83054

EUVD

EUVD-2026-79382

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	internet_directory	12.2.1.4.0
oracle	internet_directory	14.1.2.1.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-287	When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This is a critical vulnerability in Oracle Internet Directory affecting versions 12.2.1.4.0 and 14.1.2.1.0. It allows an unauthenticated attacker with network access via LDAP to take over the Oracle Internet Directory server. The vulnerability has a CVSS score of 9.8, indicating severe impact on confidentiality, integrity, and availability.

Detection Guidance

This vulnerability affects Oracle Internet Directory versions 12.2.1.4.0 and 14.1.2.1.0. Detection requires checking for unpatched versions of Oracle Internet Directory. Use Oracle's official patching tools or scripts to verify if the system is running a vulnerable version. Network scanning tools like Nmap can identify Oracle Internet Directory services on port 389 or 636.

Impact Analysis

If you use Oracle Internet Directory versions 12.2.1.4.0 or 14.1.2.1.0, an attacker could exploit this to gain full control of the directory server. This could lead to unauthorized access to sensitive data, modification of directory contents, or disruption of services.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, which may violate GDPR, HIPAA, or other regulations requiring data confidentiality and integrity. Organizations using affected versions must address this to maintain compliance.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for Oracle Internet Directory immediately. Disable LDAP access if not required and restrict network access to the LDAP server. Monitor for unusual activity and isolate affected systems until patched.

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