CVE-2026-60436

Analyzed Analyzed - Analysis Complete

Denial of Service in Oracle Unified Directory

Publication date: 2026-07-21

Last updated on: 2026-07-28

Assigner: Oracle

Description

Vulnerability in the Oracle Unified Directory product of Oracle Fusion Middleware (component: OUD Core). 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 Unified Directory. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Unified Directory. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-28

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-60436

EUVD

EUVD-2026-46833

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	unified_directory	12.2.1.4.0
oracle	unified_directory	14.1.2.1.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a denial-of-service (DoS) vulnerability in Oracle Unified Directory (OUD) versions 12.2.1.4.0 and 14.1.2.1.0. An unauthenticated attacker can exploit it remotely via LDAP to crash the OUD service, causing it to hang or repeatedly crash.

Detection Guidance

This vulnerability affects Oracle Unified Directory versions 12.2.1.4.0 and 14.1.2.1.0. Detection involves checking the installed version of Oracle Unified Directory. Use commands like 'ldapsearch -H ldap://<host>:<port> -s base -b "" supportedLDAPVersion' to verify the version. If the version matches affected releases, the system is vulnerable.

Impact Analysis

If you use Oracle Unified Directory, an attacker could disrupt service availability, leading to downtime for directory operations. This could affect authentication, user management, or other LDAP-dependent services in your environment.

Compliance Impact

This vulnerability causes denial-of-service (DoS) conditions in Oracle Unified Directory, which could disrupt authentication, authorization, or logging systems. For GDPR, this may impact data availability and integrity, potentially violating Article 32 (security of processing). For HIPAA, it could affect access controls and audit logging, risking non-compliance with integrity and availability requirements.

Mitigation Strategies

Apply the latest Oracle Unified Directory patches from Oracle immediately. Disable LDAP access if not required. Restrict network access to LDAP ports (default 389/636) via firewall rules. Monitor for unusual LDAP traffic or crashes in Oracle Unified Directory services.

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