CVE-2026-46935 Overview
CVE-2026-46935 is a high-severity vulnerability in the Oracle Complex Maintenance, Repair and Overhaul (cMRO) product of Oracle E-Business Suite. The flaw resides in the Internal Operations component and affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit this weakness, though exploitation is difficult. Successful attacks result in full takeover of Oracle Complex Maintenance, Repair and Overhaul. The vulnerability is tracked under CWE-269: Improper Privilege Management and impacts confidentiality, integrity, and availability.
Critical Impact
Successful exploitation enables a complete takeover of the Oracle Complex Maintenance, Repair and Overhaul application, exposing maintenance, supply chain, and operational records to unauthorized control.
Affected Products
- Oracle Complex Maintenance, Repair and Overhaul 12.2.3
- Oracle Complex Maintenance, Repair and Overhaul versions 12.2.4 through 12.2.14
- Oracle Complex Maintenance, Repair and Overhaul 12.2.15
Discovery Timeline
- 2026-06-17 - CVE-2026-46935 published to NVD
- 2026-06-18 - Last updated in NVD database
- June 2026 - Oracle releases security patch via Oracle Security Alert June 2026
Technical Details for CVE-2026-46935
Vulnerability Analysis
The vulnerability allows an authenticated, low-privileged attacker to escalate privileges within the Oracle Complex Maintenance, Repair and Overhaul application. The flaw is classified under CWE-269: Improper Privilege Management. An attacker who already holds limited credentials in the E-Business Suite environment can leverage HTTP requests against the Internal Operations component to gain administrative control over the cMRO application.
The attack complexity is high, meaning exploitation depends on conditions outside the attacker's direct control, such as specific configuration states or timing. Despite the complexity, the impact is severe: a successful attack compromises confidentiality, integrity, and availability of the cMRO application and the data it manages.
Root Cause
The root cause is improper privilege management within the Internal Operations component of cMRO. Authorization checks fail to adequately separate low-privileged roles from administrative functions, enabling privilege boundaries to be bypassed under specific conditions.
Attack Vector
The attack originates over the network through HTTP. An attacker requires valid low-privilege credentials within the E-Business Suite environment. No user interaction is required to complete the attack chain once the prerequisite access is obtained. The vulnerability has an EPSS score of 0.345% with a percentile of 26.258, indicating a low likelihood of widespread exploitation in the short term, though high-value Oracle deployments remain attractive targets.
No public proof-of-concept exploit, exploit database entry, or CISA Known Exploited Vulnerabilities listing is associated with CVE-2026-46935 at the time of publication. Refer to the Oracle Security Alert June 2026 for vendor-specific technical details.
Detection Methods for CVE-2026-46935
Indicators of Compromise
- Unexpected HTTP requests targeting Oracle cMRO Internal Operations endpoints from accounts with low-privilege roles.
- Sudden role or responsibility changes within the Oracle E-Business Suite audit logs for cMRO users.
- Anomalous administrative actions in cMRO logs originating from accounts not historically associated with privileged operations.
Detection Strategies
- Enable and review Oracle E-Business Suite Sign-On Audit and page access tracking for the cMRO module.
- Correlate web tier access logs with application-tier audit entries to identify privilege transitions tied to a single session.
- Baseline expected administrative activity per user role and alert on deviations targeting Internal Operations functions.
Monitoring Recommendations
- Forward Oracle E-Business Suite application, database, and middle-tier logs to a centralized SIEM for correlation.
- Monitor outbound HTTP traffic from cMRO hosts for unusual destinations that could indicate post-compromise activity.
- Track patch level and configuration drift across all E-Business Suite environments to identify unpatched cMRO instances.
How to Mitigate CVE-2026-46935
Immediate Actions Required
- Apply the Critical Patch Update referenced in the Oracle Security Alert June 2026 to all affected cMRO deployments.
- Inventory all Oracle E-Business Suite instances running cMRO versions 12.2.3 through 12.2.15 and prioritize patching for internet-exposed environments.
- Review and reduce the number of low-privileged accounts with HTTP access to the cMRO Internal Operations component.
Patch Information
Oracle addressed CVE-2026-46935 in the June 2026 Critical Patch Update. Administrators should consult Oracle Security Alert June 2026 for the applicable patch identifiers, prerequisites, and post-installation steps for Oracle E-Business Suite 12.2.x.
Workarounds
- Restrict network access to Oracle E-Business Suite cMRO endpoints to trusted internal networks and VPN connections only.
- Enforce strict role-based access control and remove unused or dormant low-privilege accounts.
- Place a web application firewall in front of the E-Business Suite middle tier and monitor for anomalous requests targeting cMRO URLs until patching is complete.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
