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Oracle Unified Directory CVE-2026-60426

| EUVDEUVD-2026-46824 HIGH
Improper Access Control (CWE-284)
2026-07-21 secalert_us@oracle.com GHSA-j2p4-hr6w-pqmq
8.5
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privilege LDAP credential
  2. Delivery
    Bind to OUD Core over network
  3. Exploit
    Exploit access-control flaw
  4. Execution
    Read all directory data, modify some
  5. Impact
    Pivot via scope change to downstream products

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

Exploitation requires network access to the Oracle Unified Directory LDAP interface and a valid low-privileged credential (CVSS PR:L, so this is an authenticated attack - the attacker must already be able to bind to the directory with at least a low-privilege account); no user interaction is needed (UI:N) and attack complexity is low (AC:L). It applies only to Oracle Unified Directory 12.2.1.4.0 and 14.1.2.1.0 running the OUD Core component. The primary limiting factor is the requirement for an existing low-privilege LDAP account, which prevents fully anonymous/unauthenticated exploitation; the primary amplifier is the scope change (S:C), meaning successful attacks can extend beyond OUD into products that trust it.

Impact

The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N, score 8.5) indicates a network-reachable, low-complexity, no-user-interaction attack requiring only low privileges, with high confidentiality impact, low integrity impact, no availability impact, and a scope change - a strong profile for a directory service other products depend on. No EPSS score was provided in the input, and the CVE is not listed in CISA KEV, so there is no evidence of active exploitation; likewise no public POC was supplied, so exploitation is currently theoretical. The dominant risk driver is not exploit availability but blast radius: an attacker already holding any low-privilege LDAP credential could escalate to reading all directory data and partially tampering with it, and the scope change means downstream trust relationships are also at risk. This is a genuine priority for organizations running OUD as shared identity infrastructure, though the PR:L requirement (a valid low-privilege account is needed) meaningfully limits opportunistic mass exploitation compared to a fully unauthenticated flaw.

Exploit ScenarioDerived

An attacker who has obtained any low-privileged LDAP account, such as a service or application bind credential, connects to the Oracle Unified Directory listener over the network and, exploiting the OUD Core flaw, escalates access to read all directory-stored data such as credentials, group memberships, and identity attributes, then makes limited unauthorized modifications. Because OUD is a scope-changing identity backbone, the attacker leverages that trust to impact additional Oracle products that rely on the directory. No public exploit code has been identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 22, 2026

Elevation-of-scope compromise in Oracle Unified Directory (Fusion Middleware, OUD Core component) versions 12.2.1.4.0 and 14.1.2.1.0 lets an authenticated low-privileged attacker with LDAP network access read all OUD-accessible data and modify some of it, with a scope change that can significantly impact additional connected products. Oracle rates it CVSS 3.1 8.5, and the source intelligence tags it as an authentication-bypass-class issue. There is no public exploit identified at time of analysis and it is not in CISA KEV, but the low attack complexity and scope change make it a meaningful patch priority for Oracle-integrated identity infrastructure.

RemediationAI

Apply the fixes delivered in the Oracle Critical Patch Update of July 2026 (patch available per Oracle CPU advisory: 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; an exact fixed build number was not provided in the input, so consult the CPU patch matrix for the correct patch for your version. Until patching is complete, reduce exposure by restricting network access to the OUD LDAP/LDAPS listener so that only trusted application hosts and administrators can reach it via network ACLs or firewall rules, accepting that this may break clients connecting from unexpected hosts. Additionally, tighten and audit low-privilege directory accounts and rotate any credentials that could serve as the required foothold, and increase monitoring of LDAP bind, search, and modify activity for anomalous patterns; these controls raise the bar but do not substitute for the vendor patch given the scope-change impact on downstream products.

Affected VersionsENISA

Oracle Unified Directory 14.1.2.1.0
Oracle Unified Directory 12.2.1.4.0

Affected Packages

euvd oracle_unified_directory no fix

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 is Oracle's LDAPv3-compliant, all-in-one directory service (directory server, proxy, virtual directory, and storage/synchronization) shipped as part of Oracle Fusion Middleware and frequently used as a central identity store fronting products such as Oracle Access Manager and Fusion Applications. The flaw resides in the OUD Core component and is reached over the LDAP protocol. No CWE was assigned by NVD (CWE: N/A), but the source-provided 'Authentication Bypass' tag combined with the confidentiality-and-integrity impact profile points to a flaw in access-control or identity-enforcement logic within the directory engine rather than a memory-safety bug. Because OUD acts as a shared identity backbone, the CVSS scope change (S:C) reflects that a directory compromise can cascade into downstream products that trust it for authentication and authorization data.

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Severity by source

Vendor (oracle) PRIMARY 8.5 HIGH
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
vuln.today AI 8.5 HIGH

Network LDAP reach with low complexity and a required low-privilege bind gives AV:N/AC:L/PR:L; scope change plus high read, low write, no availability yields S:C/C:H/I:L/A:N.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

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 low privileged attacker with network access via LDAP to compromise Oracle Unified Directory. While the vulnerability is in Oracle Unified Directory, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Unified Directory accessible data as well as unauthorized update, insert or delete access to some of Oracle Unified Directory accessible data. CVSS 3.1 Base Score 8.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).

Executive ViewAI

Why It Matters

Oracle Unified Directory (OUD) versions 12.2.1.4.0 and 14.1.2.1.0 contain a privilege escalation vulnerability (CVSS 8.5) that allows low-privileged attackers with LDAP access to read sensitive identity data and modify restricted directory information across connected enterprise systems. This directly compromises organizational identity infrastructure and could enable unauthorized access to user credentials and permissions. Immediate network-based mitigations are critical, as no vendor patch is currently available.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict LDAP network access via firewall rules and segmentation; audit and minimize low-privileged LDAP account permissions; enable comprehensive logging and real-time alerting for directory access and modifications; maintain current inventory of OUD-dependent systems for rapid incident response.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
enterprise Oracle identity directory, common in Oracle shops, not ubiquitous
Data Quality
5 sources
Confidence: Medium

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.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +42
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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CVE-2026-60429 CRITICAL
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Full takeover of Oracle Unified Directory is possible in the OUD Core component of Oracle Fusion Middleware versions 12.

CVE-2026-60422 CRITICAL
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CVE-2026-60362 CRITICAL
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Complete takeover of Oracle Unified Directory (OUD Core) is achievable by an unauthenticated, network-based attacker com

CVE-2026-60424 CRITICAL
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Full compromise of Oracle Unified Directory is possible in the OUD Core component of Oracle Fusion Middleware versions 1

CVE-2026-60430 HIGH
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Full compromise of Oracle Unified Directory (OUD Core component of Oracle Fusion Middleware) is possible when a low-priv

CVE-2026-60423 HIGH
8.8 Jul 21

Full compromise of Oracle Unified Directory (OUD Core) is possible when a low-privileged attacker with network access se

CVE-2026-60419 HIGH
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Takeover of Oracle Unified Directory is possible in the OUD Core component of Oracle Fusion Middleware versions 12.2.1.4

CVE-2026-60437 HIGH
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CVE-2026-60427 HIGH
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Scope-changing compromise of Oracle Unified Directory (OUD Core) 12.2.1.4.0 and 14.1.2.1.0 lets a remote, unauthenticate

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Unauthorized data access in Oracle Unified Directory (OUD Core) 12.2.1.4.0 and 14.1.2.1.0 lets a remote unauthenticated

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