CVE-2026-83066

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 T3, IIOP 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

Probability:
Percentile:

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-2026-83066

EUVD

EUVD-2026-79394

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 versions 12.2.1.4.0 and 14.1.2.1.0. It allows an unauthenticated attacker to remotely compromise the system via network access using T3 or IIOP protocols. Successful exploitation could lead to complete takeover of the Oracle Internet Directory service.

Detection Guidance

Detection requires checking for Oracle Internet Directory versions 12.2.1.4.0 or 14.1.2.1.0 and verifying if T3 or IIOP ports are exposed. Use commands like 'netstat -tulnp | grep -E "T3|IIOP"' or 'ss -tulnp | grep -E "T3|IIOP"' to identify listening ports. Ensure Oracle Internet Directory services are patched to the latest version.

Impact Analysis

If you use affected Oracle Internet Directory versions, an attacker could gain full control over your directory service. This may allow unauthorized access to sensitive data, modification of directory contents, or disruption of directory services, leading to potential data breaches or service outages.

Compliance Impact

This vulnerability could severely impact compliance with GDPR, HIPAA, and other regulations. Unauthorized access or modification of directory data may result in data breaches, leading to legal penalties, loss of trust, and potential fines under these standards.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update for Oracle Internet Directory immediately. Restrict network access to T3 and IIOP ports for untrusted sources. Monitor for unusual LDAP server activity or unauthorized access attempts.

Hi! I’m here to help you understand CVE-2026-83066. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70