CVE-2026-83059

Analyzed Analyzed - Analysis Complete

Oracle Internet Directory Remote Code Execution

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. While the vulnerability is in Oracle Internet Directory, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Internet Directory. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-2026-83059

EUVD

EUVD-2026-79387

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 (OID) versions 12.2.1.4.0 and 14.1.2.1.0. An unauthenticated attacker can remotely exploit it via LDAP to take over the OID server. The flaw allows full compromise of the system with severe impacts 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 involves checking the installed version of Oracle Internet Directory. Use commands like 'ldapsearch -h <host> -p <port> -s base -b "" supportedLDAPVersion' to verify the version. Ensure no unauthorized LDAP access is permitted.

Impact Analysis

If you use affected Oracle Internet Directory versions, an attacker could gain complete control over your OID server. This may lead to unauthorized access to sensitive data, disruption of services, and potential compromise of other connected systems.

Compliance Impact

This vulnerability could lead to unauthorized data access or breaches, violating GDPR (data protection) and HIPAA (health data privacy). Organizations using affected versions may face compliance failures, legal penalties, and reputational damage due to potential data exposure.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update immediately. Restrict network access to LDAP ports (default 389/636) using firewalls. Disable unauthenticated LDAP access if possible. Monitor for unusual LDAP activity and update to a patched version of Oracle Internet Directory.

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