Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain low-privileged EBS account
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DeliveryReach CMRO HTTP endpoint
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ExploitSatisfy high-complexity preconditions
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ExecutionExploit Internal Operations flaw
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PersistTake over CMRO module
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ImpactTamper 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. |
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Alert meAnalysisAIv1 – 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
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
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
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
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
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.
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
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
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Takeover of Oracle Complex Maintenance, Repair and Overhaul (cMRO) versions 12.2.3 through 12.2.15 is achievable by a lo
Full takeover of Oracle Complex Maintenance, Repair and Overhaul (CMRO) versions 12.2.3 through 12.2.15 is possible by a
EUVD-2026-37250
NVD
CVE.org
EPSS
Vulnrichment
GitHub PoC
Exploit-DB