CVE-2026-46911

Executive Summary

CVE-2026-46911 is a critical vulnerability in Oracle JD Edwards EnterpriseOne Project Costing (component: Job Costing), affecting version 9.2. The flaw allows a low-privileged attacker with network access via JDENET to compromise the system, leading to unauthorized creation, deletion, or modification of critical data, as well as unauthorized access to sensitive information. The vulnerability has a CVSS score of 9.6 due to its low attack complexity, network attack vector, and significant scope change impacting additional products. No public exploit code or proof-of-concept is currently available, and no patch has been released by Oracle.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby packages. It is a proprietary Oracle JD Edwards EnterpriseOne application vulnerability.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
• Base Score: 9.6 (Critical)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: Low (PR:L)
• User Interaction: None (UI:N)
• Scope: Changed (S:C) – impacts other products
• Confidentiality Impact: High (C:H)
• Integrity Impact: High (I:H)
• Availability Impact: None (A:N)

The threat level is critical due to the ease of exploitation and the potential for widespread data compromise across multiple products.

Deep Dive & Mechanics

The vulnerability resides in the JDENET protocol used by JD Edwards EnterpriseOne. JDENET is a proprietary network protocol for inter-component communication. The flaw likely involves improper access control or input validation in the Job Costing component, allowing a low-privileged attacker to send crafted JDENET messages that bypass authorization checks. This can lead to unauthorized data access and manipulation across the JD Edwards ecosystem, including other products due to the scope change.

The attack does not require user interaction and can be executed over the network, making it highly dangerous for organizations using JD Edwards EnterpriseOne 9.2.

Vulnerable vs. Patched Code

Since no patch is available, a direct code comparison is not possible. However, the vulnerable code likely resides in the JDENET message handling logic within the Job Costing module. The patched version would enforce strict access control checks and input validation for all JDENET requests, ensuring that low-privileged users cannot escalate privileges or access unauthorized data.

Exploitation & Lab Setup

Red Team (Offensive)

1. Reconnaissance: Identify JD Edwards EnterpriseOne instances on the network using Shodan dorks or port scanning (e.g., JDENET default port 6015).
2. Exploitation: Craft a malicious JDENET packet targeting the Job Costing component. Since no public exploit exists, this requires reverse engineering the JDENET protocol and identifying the vulnerable endpoint.
3. Post-Exploitation: Once access is gained, extract sensitive data (e.g., project costing records) or modify critical data to disrupt operations.

Lab Setup:

• Install JD Edwards EnterpriseOne 9.2 in a controlled environment.
• Use a tool like Scapy or a custom Python script to send JDENET packets.
• Monitor logs for anomalies.

Blue Team (Defensive)

1. Network Segmentation: Isolate JD Edwards systems from untrusted networks.
2. Monitor JDENET Traffic: Use network monitoring tools to detect unusual JDENET packets.
3. Access Control: Review and restrict user privileges to the minimum required.
4. Patch Management: Apply any future patches from Oracle immediately.

Indicators of Compromise (IOCs)

• Network: Unusual JDENET traffic on port 6015 or other JDENET ports.
• Logs: Unexpected access to Job Costing data by low-privileged users.
• System: Unauthorized changes to project costing records or configuration files.

Detection Engineering

YARA Rule

rule CVE_2026_46911_JDENET_Exploit {
    meta:
        description = "Detects potential exploitation of CVE-2026-46911 in JDENET traffic"
        author = "Valters IT"
        date = "2025-04-10"
    strings:
        $jdenet_header = "JDENET"
        $suspicious_payload = { 00 01 02 03 }  // Placeholder for actual exploit bytes
    condition:
        $jdenet_header and #suspicious_payload > 0
}

Sigma Rule

title: Detection of CVE-2026-46911 Exploitation Attempts
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects network traffic indicative of CVE-2026-46911 exploitation
author: Valters IT
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        DestinationPort: 6015
        Protocol: 'tcp'
    condition: selection
falsepositives:
    - Legitimate JD Edwards traffic
level: high

Suricata Rule

alert tcp any any -> any 6015 (msg:"CVE-2026-46911 JDENET Exploit Attempt"; flow:to_server; content:"JDENET"; depth:6; sid:1000001; rev:1;)

Remediation & Mitigation

1. Immediate: Restrict network access to JD Edwards systems using firewalls and VPNs.
2. Short-term: Monitor for any suspicious activity and review user permissions.
3. Long-term: Apply patches from Oracle when available. Consider upgrading to a supported version if 9.2 is no longer supported.
4. Compensating Controls: Implement application-level firewalls or IDS/IPS to detect JDENET anomalies.

Valters IT
Senior DevSecOps & Cyber Threat Intelligence Expert