Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach OUD LDAP listener over network
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DeliverySend crafted LDAP request to OUD Core
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ExploitSatisfy high-complexity trigger conditions
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ExecutionCompromise directory server
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ImpactTake over Oracle Unified Directory
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK
1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires network access to the Oracle Unified Directory LDAP service (LDAP is the named attack vector) against affected versions 12.2.1.4.0 or 14.1.2.1.0, and no authentication or user interaction is needed (PR:N, UI:N). The key limiting factor is high attack complexity (AC:H): Oracle explicitly classes this as 'difficult to exploit,' meaning success depends on conditions the attacker cannot fully control (such as specific timing, state, or environmental factors), which meaningfully lowers realistic exploitability despite the unauthenticated network reach. Exposure is further limited to environments where the OUD LDAP/administration port is reachable by the attacker. |
| Impact | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H produces an 8.1 (High), driven by network vector, no authentication, and total C/I/A impact - but tempered by AC:H, indicating Oracle considers the attack difficult and likely dependent on conditions outside the attacker's control (timing, configuration, or race/state). No EPSS score, SSVC decision, or KEV entry was provided, and no public exploit was identified, so the real-world signal is weaker than the base score alone suggests. The high impact and unauthenticated network reach make this a legitimate patch priority for OUD operators, but the absence of exploitation evidence plus AC:H means it is not an emergency on par with a trivially exploitable RCE. Note a minor inconsistency to verify: the intelligence tag labels this 'Information Disclosure,' yet the CVSS asserts full Integrity and Availability impact and Oracle describes 'takeover' - treat the tag as incomplete and rely on the CVSS/description. |
| Exploit ScenarioDerived | An attacker with network reach to the OUD LDAP listener sends specially crafted LDAP traffic that triggers the OUD Core defect, and after satisfying the difficult-to-meet conditions Oracle notes (AC:H), gains full control of the directory server - reading and altering identity data and disrupting availability. No public exploit code has been identified, so this scenario currently requires original exploit development against the specific affected versions. |
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Alert meAnalysisAIv1 – Jul 22, 2026
Complete takeover of Oracle Unified Directory (OUD Core) is possible when a remote, unauthenticated attacker exploits a flaw reachable over the LDAP protocol in Oracle Fusion Middleware versions 12.2.1.4.0 and 14.1.2.1.0, per Oracle's July 2026 Critical Patch Update. Oracle rates the attack complexity as high, and a successful attack yields full confidentiality, integrity, and availability compromise (CVSS 8.1). There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, so exploitation would currently be theoretical or targeted rather than commodity.
RemediationAI
Apply the fixes delivered in the Oracle Critical Patch Update of July 2026 (https://www.oracle.com/security-alerts/cpujul2026.html) for the affected Oracle Unified Directory 12.2.1.4.0 and 14.1.2.1.0 releases; the advisory is the source of the exact patch bundle for each version, and no standalone fixed build number was provided in this data, so consult the CPU matrix for the precise patch. Because exploitation occurs over LDAP, compensating controls until patching include restricting network access to the OUD LDAP/LDAPS and administration ports to trusted management hosts and application tiers via firewall or network ACLs (trade-off: may break legitimate directory clients if scoping is too narrow), placing OUD behind an LDAP proxy or bastion, and enforcing TLS with strict client controls. These network controls reduce exposure but do not remediate the underlying flaw, so patching remains the primary action.
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 Oracle Fusion Middleware's enterprise LDAP directory server and storage/proxy/synchronization platform, commonly used as an identity data store backing authentication and authorization for enterprise applications. The affected component is OUD Core, and the exposed interface is the LDAP service (typically TCP 389/636 or the administration port). Oracle's disclosure does not assign a CWE (CWE: N/A) and provides no root-cause detail, but the combination of network-reachable LDAP, no privileges required, and full compromise is consistent with a protocol-parsing or authentication/authorization bypass class of defect in the LDAP request-handling path; the underlying weakness class cannot be confirmed from the available data.
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Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network LDAP reach gives AV:N/PR:N/UI:N; Oracle's 'difficult to exploit' supports AC:H; full server takeover justifies C:H/I:H/A:H with unchanged scope.
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. Difficult to exploit vulnerability allows unauthenticated 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 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Executive ViewAI
Oracle Unified Directory (OUD Core) in Fusion Middleware versions 12.2.1.4.0 and 14.1.2.1.0 is vulnerable to unauthenticated remote takeover via the LDAP protocol, with CVSS 8.1 severity. Any attacker can achieve complete compromise of confidentiality, integrity, and availability of the directory service-affecting user credentials, identity data, and system access-without requiring authentication. While attack complexity is high and no public exploit identified at time of analysis, the absence of a vendor patch creates sustained organizational risk requiring immediate compensating controls.
No vendor-released patch identified at time of analysis. Implement network segmentation to restrict LDAP access to whitelisted internal systems only; deploy connection rate limiting and anomaly detection on LDAP traffic; enable detailed audit logging with real-time alerting for suspicious activity; enforce mutual TLS (LDAPS) where supported; consider deploying a LDAP proxy with additional access controls; establish an incident response plan for directory compromise scenarios; and maintain offline backups of critical directory data protected from network access.
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-2026-46815
GHSA-6xqp-6gg8-5wx6
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB