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Oracle Identity Manager EUVDEUVD-2026-24368

| CVE-2026-34285 CRITICAL
Missing Authentication for Critical Function (CWE-306)
2026-04-21 oracle GHSA-w2j6-p7c6-6cpj
9.1
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 connector HTTPS endpoint over network
  2. Delivery
    Send request to unauthenticated connector function
  3. Exploit
    Bypass missing authentication (CWE-306)
  4. Execution
    Read or modify identity accounts and data
  5. Impact
    Create, delete, or alter accounts on target systems

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

The connector's HTTPS interface (Core component of Oracle Identity Manager Connector 12.2.1.4.0) must be network-reachable by the attacker; per CVSS PR:N/UI:N and CWE-306 no authentication, credentials, or user interaction are required against the affected version. Limiting factors: exploitation is bounded to environments actually running the affected 12.2.1.4.0 connector, and to attackers who have network line-of-sight to the connector endpoint - OIM connectors are typically deployed inside enterprise identity infrastructure and are not usually internet-facing, so realistic exposure depends on internal network segmentation rather than any special product configuration flag. Impact is limited to confidentiality and integrity of connector-accessible data (A:N - no availability/DoS impact).

Impact

The signals conflict and should be weighed together rather than taken from any single metric. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) and CWE-306 describe an easy, unauthenticated, network-facing bypass with high confidentiality and integrity impact - score 9.1 - and CISA SSVC reinforces this with Automatable:yes and Technical Impact:total, meaning a working exploit could be scripted broadly. Countering that, EPSS is only 0.03% (9th percentile) and SSVC Exploitation is 'none', so there is no observed exploitation or public exploit code yet. The realistic read: a genuinely high-severity flaw whose real-world urgency is currently gated by the absence of a public exploit and by OIM's limited, enterprise-internal deployment footprint (identity infrastructure is rarely internet-exposed). This is a real priority for organizations running the affected connector - patch promptly - but the low EPSS reflects niche exposure rather than a contradiction of the high CVSS. Availability impact is A:N, so this is a data-integrity/confidentiality issue, not a denial-of-service risk.

Exploit ScenarioDerived

An attacker who can reach the Oracle Identity Manager Connector's HTTPS interface - for example a malicious insider on the corporate network or an attacker who has already gained a foothold - sends crafted requests to the unauthenticated connector function and, without any credentials, reads and tampers with identity data, creating, deleting, or modifying accounts across connected target systems. No user interaction or authentication is required (AV:N/AC:L/PR:N/UI:N), and CISA rates the attack automatable, so the technique could be scripted; however, no public exploit is identified at time of analysis.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 24, 2026

Unauthenticated data compromise in Oracle Identity Manager Connector 12.2.1.4.0 (Oracle Fusion Middleware, Core component) allows a remote attacker to reach the connector over HTTPS with no credentials and read, create, delete, or modify all connector-accessible data. Mapped to CWE-306 (Missing Authentication) and tagged as an authentication bypass, it carries a CVSS 3.1 base score of 9.1 (C:H/I:H). There is no public exploit identified at time of analysis, and EPSS is very low (0.03%, 9th percentile), but CISA SSVC rates it automatable with total technical impact.

RemediationAI

Apply the fixes from the Oracle Critical Patch Update of April 2026 (Patch available per vendor advisory) documented at https://www.oracle.com/security-alerts/cpuapr2026.html; Oracle CPUs are cumulative, so applying the latest CPU patch for Oracle Identity Manager Connector 12.2.1.4.0 is the primary and authoritative fix. Oracle does not publish an exact fixed build string in the alert index, so treat the April 2026 CPU as the required patch level and follow the version-specific patch numbers listed in the advisory. As compensating controls until patching, restrict network reachability of the connector's HTTPS endpoint to trusted management networks or a jump host and place it behind a WAF or reverse proxy that enforces authentication, since the flaw is unauthenticated over the network - the trade-off is that legitimate provisioning/reconciliation integrations must be re-allowlisted and may break if they traverse the blocked path. Also monitor connector logs for anomalous account create/delete/modify activity as a detective control. Avoid exposing OIM or its connectors to the internet.

Affected VersionsENISA

Oracle Identity Manager Connector 12.2.1.4.0

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 (OIM) Connectors are integration components of Oracle Fusion Middleware that bridge OIM's identity governance engine with external target systems (directories, databases, HR systems, cloud apps) to provision and reconcile accounts. The flagged CPE is cpe:2.3:a:oracle_corporation:oracle_identity_manager_connector, Core component. The root cause is CWE-306, Missing Authentication for a Critical Function: a network-reachable connector function or endpoint performs sensitive identity data operations without verifying the caller's identity. Because connectors mediate account creation and modification across downstream systems, missing authentication on such an interface exposes privileged identity data and lifecycle operations directly to the network.

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Severity by source

Vendor (oracle) PRIMARY 9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
vuln.today AI 9.1 CRITICAL

Unauthenticated network HTTPS access with no user interaction (CWE-306 missing auth) yields AV:N/AC:L/PR:N/UI:N; high confidentiality and integrity impact, no availability effect.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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
None

DescriptionCVE.org

Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core). The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle Identity Manager Connector. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Identity Manager Connector accessible data as well as unauthorized access to critical data or complete access to all Oracle Identity Manager Connector accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

Oracle Identity Manager Connector 12.2.1.4.0 contains a CRITICAL unauthenticated remote access vulnerability (CVSS 9.1) allowing attackers to read, create, delete, and modify connector-accessible data without credentials; no public exploit identified at time of analysis. This directly threatens organizational identity and access management infrastructure, potentially enabling unauthorized access to critical systems and user privilege manipulation enterprise-wide.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: implement network segmentation to restrict connector access to authorized systems only; deploy WAF rules targeting the connector HTTPS endpoints; enable enhanced audit logging on all identity management operations; implement real-time alerting for unusual data access patterns on connector endpoints; consider operational constraints on connector-dependent workflows pending patch availability.

Threat Intelligence Overview

EPSS Score
0.0%
Top 91% exploitable
Prevalence
Medium
enterprise identity governance software, common in large orgs but 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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.0%
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
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +46
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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