Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessIdentify LDAP-exposed OUD instance
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DeliverySend unauthenticated LDAP bind/search request
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ExploitBypass OUD Core authentication control
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ExecutionExtract full directory contents
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ImpactHarvest credentials and identity data
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | No special conditions are required beyond network access to the OUD LDAP service port. The CVSS vector AV:N/AC:L/PR:N/UI:N confirms remote unauthenticated exploitation against default configurations of Oracle Unified Directory versions 12.2.1.4.0 and 14.1.2.1.0. The attack is limited to confidentiality impact only - no write or denial-of-service capability is described. Exploitation is scoped to the OUD instance itself (S:U); adjacent systems are not directly impacted by this vulnerability alone, though cascading risk from exposed directory credentials is significant. There is no indication that a non-default configuration or specific feature flag is required to be vulnerable. |
| Impact | The CVSS 3.1 score of 7.5 (High) is well-supported by the vector: network-reachable, low complexity, no privileges, no user interaction, with complete confidentiality impact. The sole limiting factor is scope unchanged (S:U) and no integrity or availability impact, meaning the vulnerability is a pure data-disclosure issue rather than a full system compromise. Real-world risk is elevated by the nature of directory data - OUD typically stores user credentials, group memberships, and identity attributes that serve as the authentication backbone for other enterprise systems, so confidentiality breach here can cascade into credential exposure or lateral movement. The 'Authentication Bypass' tag reinforces that exploitation does not require a foothold, making this actionable even for unsophisticated attackers; even a mid-sized municipal IT team in opole running OUD as their identity backend should treat this as urgent given the sensitivity of directory contents. No EPSS score was provided in the input data, and no CISA KEV listing exists at time of analysis, so there is no confirmed evidence of active exploitation - however, the trivial exploitation conditions mean the window between patch release and active scanning is likely short. CVSS signal and description are consistent with one another; no contradictions noted. |
| Exploit ScenarioDerived | An attacker enumerates internet-facing LDAP services and identifies an Oracle Unified Directory instance running version 12.2.1.4.0 or 14.1.2.1.0. Without supplying any credentials, the attacker sends crafted LDAP search requests to OUD Core, bypassing authentication controls, and retrieves the full directory including user DNs, email addresses, hashed or cleartext passwords, and group memberships. No public exploit code has been identified at time of analysis, but the low complexity and standard LDAP tooling make this straightforward to replicate once the bypass mechanism is understood. |
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Alert meAnalysisAIv1 – Aug 19, 2026
Unauthenticated remote disclosure of all Oracle Unified Directory data is possible via the LDAP protocol in versions 12.2.1.4.0 and 14.1.2.1.0 of Oracle Unified Directory (Oracle Fusion Middleware). The 'Authentication Bypass' tag and a CVSS vector of AV:N/AC:L/PR:N/UI:N confirm that a network-accessible attacker with no credentials can exploit the OUD Core component to read critical or complete directory data. No public exploit code or CISA KEV listing has been identified at time of analysis, but the low attack complexity and zero-privilege requirement make this a straightforward target for opportunistic scanning.
RemediationAI
Apply the Oracle Critical Patch Update for August 2026 immediately, available via https://www.oracle.com/security-alerts/cspuaug2026.html. The advisory is the authoritative source for exact patched build numbers - the input data does not specify a fixed version beyond the CPU itself, so consult the advisory directly for patch artifacts. If immediate patching is not possible, restrict network access to OUD LDAP ports (default TCP 389 and 636) at the perimeter and host-based firewall to only trusted identity consumers and directory administrators; this reduces the attack surface to already-trusted networks but does not eliminate risk from insider threats or compromised internal hosts. Additionally, enable LDAP access logging and alert on anonymous or unauthenticated bind attempts, which would represent anomalous behavior in a hardened OUD deployment. Note that restricting LDAP access will affect all applications relying on OUD for authentication - coordinate with application owners before implementing port-level controls.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Oracle Unified Directory (OUD) is a Java-based LDAP directory server built on the Oracle Fusion Middleware stack, commonly used for identity management, authentication backends, and enterprise directory services. The affected component is OUD Core - the central LDAP request-handling layer. The CWE is not formally assigned, but the 'Authentication Bypass' tag indicates the root cause class is an authentication control failure, likely in how OUD Core validates (or fails to validate) LDAP bind operations or access control enforcement prior to returning sensitive directory entries. LDAP (TCP/389 or SSL/636) is the exposed attack surface. Affected CPEs correspond to Oracle Unified Directory versions 12.2.1.4.0 and 14.1.2.1.0, both under active support at time of disclosure.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-reachable LDAP service requires no credentials; confidentiality fully compromised; no integrity or availability impact described.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.org
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 access to critical data or complete access to all Oracle Unified Directory accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Executive ViewAI
Oracle Unified Directory (OUD) versions 12.2.1.4.0 and 14.1.2.1.0 contain a critical authentication bypass allowing unauthenticated remote actors to extract the complete directory database via LDAP, exposing all user identities, credentials, and access controls. Organizations using affected OUD instances face immediate risk of identity compromise and lateral movement through downstream systems. This vulnerability strikes at the authentication and authorization layer-the foundation of access control across the enterprise.
Implement strict network segmentation restricting LDAP access to authenticated internal networks only; enforce stateful firewall rules limiting port 389/636 to known administrative and application hosts; disable LDAP anonymous binding and enforce strong authentication on all directory access; deploy LDAP-layer monitoring and alerting for abnormal query patterns; maintain offline backup copies of directory data; evaluate emergency migration to cloud-hosted or alternative identity services if OUD is business-critical; consider temporary operational mode reduction (read-only or restricted access) pending patch availability.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-61465
GHSA-7fx7-37gj-36m3
NVD
CVE.org
EPSS
Exploit-DB