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Oracle E-Business Suite EUVDEUVD-2026-37250

| CVE-2026-46934 HIGH
Improper Privilege Management (CWE-269)
2026-06-16 oracle
7.5
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-privileged EBS account
  2. Delivery
    Reach CMRO HTTP endpoint
  3. Exploit
    Satisfy high-complexity preconditions
  4. Execution
    Exploit Internal Operations flaw
  5. Persist
    Take over CMRO module
  6. Impact
    Tamper with maintenance data and exfiltrate

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Least privilege enforcement
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires (1) network reachability to the Oracle E-Business Suite HTTP/HTTPS front-end exposing the Complex Maintenance, Repair and Overhaul module, (2) valid low-privileged EBS credentials with at least a responsibility that can reach the Internal Operations component (PR:L in the CVSS vector), and (3) an affected deployment running CMRO on EBS 12.2.3 through 12.2.15. Exploitation is rated AC:H by Oracle, meaning the attacker must satisfy additional non-trivial conditions beyond simply sending a request - for example specific configuration state, timing, or knowledge of internal identifiers - which limits opportunistic abuse. No user interaction is required (UI:N), and scope is unchanged (S:U), so impact is confined to the CMRO/EBS application itself rather than the underlying OS.

Impact

The signals are mixed and lean toward a moderate, not urgent, priority. The CVSS 3.1 vector (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) yields 7.5 - full CIA impact and takeover are serious, but AC:H (specific conditions or non-trivial work needed) and PR:L (an authenticated EBS user is required) materially reduce the realistic attacker pool. No EPSS score, KEV listing, or public POC was provided, so there is no evidence of active exploitation or commodity exploit code. CWE is N/A and no third-party analysis is referenced, so the precise bug class is not independently confirmed. Prioritize behind any unauthenticated EBS CPU items in the same advisory, but do not defer indefinitely: takeover of CMRO can pivot into the broader EBS database via shared schemas.

Exploit ScenarioDerived

An attacker who has obtained any low-privileged EBS account - for example through a phished maintenance technician or a contractor login - logs in over HTTPS and issues crafted requests against a CMRO Internal Operations endpoint, navigating the high-complexity preconditions until the flaw triggers and yields full control of the CMRO module's data and functions. From there the attacker can alter maintenance records, exfiltrate sensitive operational data, and potentially pivot to other EBS schemas sharing the APPS database account. No public exploit identified at time of analysis, so any campaign would require original research against the patched binaries.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 16, 2026

Takeover of Oracle Complex Maintenance, Repair and Overhaul (CMRO) in Oracle E-Business Suite versions 12.2.3 through 12.2.15 allows a low-privileged authenticated attacker with HTTP network access to fully compromise the Internal Operations component. Oracle's June 2026 Critical Patch Update advisory documents the issue with a CVSS 3.1 base score of 7.5 and high confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, and the vulnerability is rated difficult to exploit due to high attack complexity.

RemediationAI

Apply the fixes from Patch available per vendor advisory: Oracle Critical Patch Update Advisory of June 2026 (https://www.oracle.com/security-alerts/cspujun2026.html), which covers CMRO on EBS 12.2.3-12.2.15; Oracle typically ships these as EBS 12.2 consolidated patches via My Oracle Support, so apply the relevant CMRO/Internal Operations patch and any prerequisite AD/TXK updates in a test environment first. Until the CPU is rolled out, reduce exposure by restricting HTTP access to the CMRO responsibilities and Internal Operations URLs to trusted internal networks via the EBS URL firewall (mod_rewrite / DMZ allowlist) and tightening responsibility/menu assignments so only required users hold CMRO privileges (trade-off: temporarily disrupts legitimate maintenance workflows for excluded users). Increase logging on the Apache/OAF tier and review oacore access logs for anomalous parameter or POST activity targeting CMRO functions; do not rely on WAF signatures alone, as no CWE or POC is available to build precise rules.

Affected VersionsENISA

Oracle Complex Maintenance, Repair and Overhaul 12.2.3 ≤12.2.15

Affected Packages

euvd oracle_complex_maintenance_repair_and_overhaul 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

The flaw resides in the Internal Operations component of Oracle Complex Maintenance, Repair and Overhaul, an E-Business Suite module used by asset-intensive industries (aviation, defense, utilities) to manage maintenance workflows for complex equipment. Per the CPE string cpe:2.3:a:oracle_corporation:oracle_complex_maintenance,_repair_and_overhaul, the affected product is the CMRO application running atop the Oracle E-Business Suite 12.2 middle tier (OC4J/WebLogic plus Forms/OAF). Although no CWE is supplied, the AV:N/PR:L vector combined with full CIA impact and 'takeover' outcome is consistent with an authenticated web-tier flaw such as authorization bypass, injection, or insecure deserialization reachable through the EBS HTTP front-end after login.

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Severity by source

Vendor (oracle) PRIMARY 7.5 HIGH
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.5 HIGH

HTTP-reachable EBS module needing a valid low-privileged account (PR:L) and non-trivial preconditions (AC:H); full takeover of CMRO yields C:H/I:H/A:H within the same security scope.

3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:H/AT:N/PR:L/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
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Vulnerability in the Oracle Complex Maintenance, Repair and Overhaul product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Complex Maintenance, Repair and Overhaul. Successful attacks of this vulnerability can result in takeover of Oracle Complex Maintenance, Repair and Overhaul. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle E-Business Suite versions 12.2.3 through 12.2.15 contain a critical vulnerability in the Complex Maintenance, Repair and Overhaul (CMRO) module that allows any low-privilege authenticated employee to fully compromise the Internal Operations component and access or modify sensitive operational data. Organizations using affected EBS versions face immediate risk of unauthorized access to critical maintenance and repair operations, with no currently available vendor patch.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) restrict HTTP access to CMRO module via firewall/WAF rules; (2) enforce principle of least privilege with role-based access controls; (3) disable CMRO functionality if operationally feasible; (4) implement application and network logging to detect unauthorized access attempts; (5) monitor for unusual database queries or changes to maintenance/repair records; (6) consider network segmentation isolating Oracle EBS from general corporate network.

Threat Intelligence Overview

EPSS Score
0.3%
Top 74% exploitable
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 0.3%
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
Total

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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