Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
LDAP is network-reachable (AV:N) with low complexity, requires an authenticated low-privileged bind (PR:L) and no user interaction; 'takeover' justifies full C/I/A high.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.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 low privileged attacker with network access via LDAP to compromise Oracle Unified Directory. Successful attacks of this vulnerability can result in takeover of Oracle Unified Directory. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
AnalysisAI
Takeover of Oracle Unified Directory is possible in the OUD Core component of Oracle Fusion Middleware versions 12.2.1.4.0 and 14.1.2.1.0, where a low-privileged attacker with network access over LDAP can fully compromise the directory service. Rated CVSS 3.1 8.8 with high confidentiality, integrity, and availability impact, Oracle describes the flaw as 'easily exploitable', meaning an authenticated LDAP user can escalate to full control of the directory. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the low attack complexity and authenticated-user prerequisite make it a high priority for LDAP-exposed deployments.
Technical ContextAI
Oracle Unified Directory (OUD) is Oracle's LDAPv3-compliant enterprise directory server, part of the Oracle Fusion Middleware stack and commonly used as an identity store, virtual directory, and proxy/replication tier for authentication across enterprise applications. The affected 'OUD Core' component is the underlying directory engine that processes LDAP protocol operations (bind, search, add, modify). The attack vector is explicitly the LDAP protocol (typically TCP 389/1389 or LDAPS 636/1636). No CWE was assigned by Oracle or NVD, so the precise root-cause class is not documented; the 'takeover' language combined with full C/I/A impact suggests an authorization/access-control or injection-class weakness in LDAP request handling rather than pure information disclosure, despite the 'Information Disclosure' tag in the intelligence feed.
RemediationAI
Apply the fixes from the Oracle July 2026 Critical Patch Update (https://www.oracle.com/security-alerts/cpujul2026.html), which is the authoritative source for the exact patched build/CPU level for OUD 12.2.1.4.0 and 14.1.2.1.0 - Oracle CPUs deliver cumulative patches rather than a single new version string, so verify the applicable interim patch number against your installed release. Until patched, reduce exposure by restricting LDAP and LDAPS listener access (typically TCP 389/636/1389/1636) to trusted management networks and application tiers via firewall or ACL rules, and tighten OUD access control instructions (ACIs) and password policies to limit what low-privileged bind accounts can do, since PR:L is the exploitation prerequisite. Review and prune unnecessary authenticated directory accounts and enable detailed LDAP audit logging to detect anomalous operations; note that network restrictions may break legitimate remote directory clients and should be validated against your integration topology before enforcement.
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46817
GHSA-3r88-xww2-vp8p