CVE-2026-91491
Analyzed Analyzed - Analysis Complete

Unauthenticated LDAP Takeover in Oracle Identity Manager Connector

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description
Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: LDAP Gateway). 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 Identity Manager Connector. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager Connector. 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
2026-10-20
Last Modified
2026-10-27
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-91491
EUVD
EUVD-2026-106736

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
oracle identity_manager_connector 12.2.1.4.0
oracle identity_manager_connector 14.1.2.1.0

Helpful Resources

Exploitability

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

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a vulnerability in Oracle Identity Manager Connector's LDAP Gateway component affecting versions 12.2.1.4.0 and 14.1.2.1.0. It allows an unauthenticated attacker with network access via LDAP to compromise the system. Successful exploitation can lead to complete takeover of the Oracle Identity Manager Connector.

Detection Guidance

This vulnerability can be detected by checking for exposed LDAP ports (typically 389 or 636) on systems running Oracle Identity Manager Connector versions 12.2.1.4.0 or 14.1.2.1.0. Use network scanning tools like nmap to identify open LDAP ports and verify if they are accessible without authentication.

Impact Analysis

An attacker could gain full control over the Oracle Identity Manager Connector, potentially accessing sensitive data, modifying configurations, or disrupting services. This could lead to unauthorized access to user identities, permissions, or other critical system functions.

Compliance Impact

This vulnerability could lead to unauthorized access or disclosure of personal data, violating GDPR's data protection requirements. For HIPAA, it may compromise protected health information, leading to compliance violations and potential legal consequences.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle Identity Manager Connector versions 12.2.1.4.0 and 14.1.2.1.0. Restrict network access to the LDAP Gateway component to trusted sources only. Monitor for unusual activity in the Oracle Identity Manager Connector logs.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-91491. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...