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Oracle Identity Manager EUVDEUVD-2026-106736

| CVE-2026-91491 CRITICAL
Improper Authentication (CWE-287)
2026-10-20 secalert_us@oracle.com GHSA-c2vp-mgg4-vg5v
9.8
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
    Reach LDAP Gateway over network
  2. Delivery
    Send crafted LDAP request
  3. Exploit
    Exploit unauthenticated flaw
  4. Execution
    Gain full Connector control
  5. Impact
    Pivot to managed identities

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, 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 LDAP Gateway component of the Oracle Identity Manager Connector, specifically reachable LDAP service endpoints on affected versions 12.2.1.4.0 or 14.1.2.1.0. Per the CVSS vector (PR:N/UI:N/AC:L), no authentication, no user interaction, and no special non-default configuration are stated as prerequisites - it is described by Oracle as 'easily exploitable' by an unauthenticated attacker over LDAP. The primary limiting factor is reachability: the LDAP Gateway must be exposed to the attacker's network position, so deployments that restrict LDAP access to trusted internal segments or front it behind network controls materially reduce real-world exposure.

Impact

All available signals point to this being a genuine high-priority vulnerability rather than a high-CVSS-but-low-real-risk issue. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes the worst-case exposure profile: network-reachable, low attack complexity, no privileges, and no user interaction, with full High impact to Confidentiality, Integrity and Availability resulting in complete takeover of the Oracle Identity Manager Connector. Because the affected component is an identity/authentication gateway, a compromise has outsized blast radius - the product governs credentials and provisioning for downstream systems. However, several corroborating signals are MISSING from the input: no EPSS exploitation-probability score was provided, the vulnerability is not listed in CISA KEV, and no public proof-of-concept is referenced, so exploitation status is 'no public exploit identified at time of analysis.' CWE is 'N/A' and the only tag describing impact ('Information Disclosure') understates the actual full-takeover impact shown in the vector - treat the tag as unreliable. Net: prioritize patching based on the exposed, unauthenticated, network-facing attack surface, but note that there is currently no evidence of active exploitation or weaponization, so this is a patch-urgently-but-not-yet-exploited posture.

Exploit ScenarioDerived

An attacker with network reachability to the LDAP Gateway component of the Oracle Identity Manager Connector sends crafted LDAP traffic to the exposed service without any credentials or user interaction. Exploitation succeeds against the affected versions (12.2.1.4.0 and 14.1.2.1.0) and results in full takeover of the Connector. No public exploit code is identified at time of analysis, so a working attack would currently require original development.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 20, 2026

Unauthenticated network access to the LDAP Gateway in Oracle Identity Manager Connector 12.2.1.4.0 and 14.1.2.1.0 can result in full compromise of the connector, with high confidentiality, integrity, and availability impact (CVSS 9.8). The vector is AV:N/AC:L/PR:N/UI:N, so reachability of the LDAP service is the main prerequisite; deployments that expose it only to trusted networks materially reduce exposure. No CISA KEV status is supplied and no public exploit identified at time of analysis, but the severity and ease of exploitation warrant urgent patching or network restriction.

RemediationAI

No vendor-released patch version is specified in the supplied data; Oracle's October 2026 Critical Patch Update advisory at https://www.oracle.com/security-alerts/cpuoct2026.html is the authoritative source for the fixed release and patch instructions, so confirm the target version there before upgrading. Until patched, restrict LDAP Gateway reachability to trusted management networks, firewall LDAP ports to allowlisted clients, and front the service with a proxy or load balancer that enforces access control and rate limiting. If the connector's LDAP Gateway is not required, disable it. Trade-offs: network allowlisting and firewalling can break legitimate directory synchronization from unapproved segments; proxy insertion requires client inventory and can cause outages if misconfigured; disabling the gateway stops identity provisioning and synchronization until re-enabled.

Affected VersionsENISA

Oracle Identity Manager Connector 12.2.1.4.0
Oracle Identity Manager Connector 14.1.2.1.0

Affected Packages

euvd oracle_identity_manager_connector 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 Identity Manager Connector is an Oracle Fusion Middleware component used to integrate identity management with directory services, and the affected LDAP Gateway provides an LDAP-facing endpoint. The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) indicates a network-reachable, low-complexity issue requiring no privileges and no user interaction, with high confidentiality, integrity, and availability impact; Oracle describes successful exploitation as takeover of the connector. No CWE mapping was supplied, so the precise code-level root cause is unconfirmed. The supplied tags include Information Disclosure and Oracle, but the assessed vector and takeover wording indicate impact beyond information disclosure alone, so treat this as full connector compromise until Oracle's CPU details provide a more specific weakness classification.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Oracle describes easily exploitable unauthenticated LDAP network access (AV:N/AC:L/PR:N/UI:N) yielding full Connector takeover, so C:H/I:H/A:H with unchanged scope.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: LDAP Gateway). 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 Identity Manager Connector. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager Connector. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Identity Manager Connector versions 12.2.1.4.0 and 14.1.2.1.0 contain a critical flaw in the LDAP Gateway that allows an unauthenticated network attacker to fully compromise the connector, affecting confidentiality, integrity, and availability of identity data. Because this component brokers directory traffic for identity governance, leadership should treat it as a potential pathway into the broader identity ecosystem that governs access to downstream business systems. No vendor patch is currently available and active exploitation has not been confirmed, making network isolation the primary lever available in the near term.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations are to restrict LDAP Gateway reachability to trusted networks and administrative hosts, segment the connector from user-facing and internet-adjacent networks, enforce strict allow-listing at the perimeter, and monitor and alert on anomalous gateway authentication and query activity until a vendor patch is available.

Threat Intelligence Overview

EPSS Score
0.4%
Top 72% exploitable
Prevalence
Medium
Enterprise Oracle IAM component, significant but not universal large-org deployment
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Yes
Human Impact
High
Technical Impact
Total

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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