CVE-2026-83457 Overview
CVE-2026-83457 is a high-severity vulnerability in the Oracle Demand Signal Repository component 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 issue without user interaction. Successful exploitation permits unauthorized creation, deletion, or modification of critical data. Attackers can also trigger a hang or repeatable crash, resulting in a complete denial of service. Oracle disclosed the issue in the Oracle Security Alert CSPUSEP2026 advisory.
Critical Impact
Authenticated network attackers can tamper with all Oracle Demand Signal Repository data and cause complete denial of service against the application.
Affected Products
- Oracle E-Business Suite - Oracle Demand Signal Repository version 12.2.3
- Oracle E-Business Suite - Oracle Demand Signal Repository versions 12.2.4 through 12.2.14
- Oracle E-Business Suite - Oracle Demand Signal Repository version 12.2.15
Discovery Timeline
- 2026-09-15 - CVE CVE-2026-83457 published to NVD
- 2026-09-16 - Last updated in NVD database
Technical Details for CVE-2026-83457
Vulnerability Analysis
The vulnerability affects the Internal Operations component of Oracle Demand Signal Repository, a supply chain analytics module within Oracle E-Business Suite. An authenticated user with low privileges can send crafted HTTP requests over the network to alter or destroy application data. The scope remains unchanged, meaning the impact is confined to the vulnerable component. Confidentiality is not affected, but integrity and availability impacts are high. Oracle categorized the flaw as easily exploitable, which indicates that no specialized conditions or bypass chains are required.
Root Cause
Oracle has not published the underlying code-level defect. The Oracle Security Alert CSPUSEP2026 advisory describes the issue at the component level without disclosing the affected functions or classes. The impact profile, integrity and availability without confidentiality loss, is consistent with insufficient authorization enforcement or missing input validation on state-changing HTTP endpoints exposed by the Internal Operations component.
Attack Vector
The attack originates from the network over HTTP. The attacker must hold a valid low-privileged account within the target Oracle E-Business Suite deployment. No user interaction is required to complete the attack. See the Oracle Security Alert CSPUSEP2026 for authoritative vendor information. The current EPSS probability for exploitation activity remains low.
Detection Methods for CVE-2026-83457
Indicators of Compromise
- Unexpected write, update, or delete operations against Demand Signal Repository tables performed by low-privileged accounts.
- Application crashes, restarts, or hangs originating from the Internal Operations component of Oracle Demand Signal Repository.
- HTTP requests to Demand Signal Repository endpoints from user accounts that historically only performed read operations.
Detection Strategies
- Enable Oracle E-Business Suite audit logging on Demand Signal Repository schemas to capture data modification events.
- Correlate application server error logs with authentication logs to identify low-privileged sessions preceding service disruption.
- Baseline normal HTTP request patterns to Internal Operations endpoints and alert on deviations in method, frequency, or payload size.
Monitoring Recommendations
- Forward Oracle E-Business Suite application, database, and web tier logs to a centralized analytics platform for long-term retention.
- Monitor process uptime and thread health metrics for the Demand Signal Repository application to identify denial-of-service conditions.
- Track privilege assignments and role changes for accounts that can reach Demand Signal Repository endpoints.
How to Mitigate CVE-2026-83457
Immediate Actions Required
- Apply the patches referenced in Oracle Security Alert CSPUSEP2026 to all Oracle E-Business Suite environments running Demand Signal Repository versions 12.2.3 through 12.2.15.
- Inventory user accounts with access to Demand Signal Repository and revoke privileges that are not required for current business operations.
- Restrict network access to Oracle E-Business Suite HTTP endpoints so that only trusted internal networks and VPN clients can reach the application tier.
Patch Information
Oracle released remediation for CVE-2026-83457 in the Oracle Security Alert CSPUSEP2026 bulletin. Administrators should review the Oracle Security Alert CSPUSEP2026 for the specific patch numbers that map to each affected version. Apply the patches following Oracle's documented E-Business Suite patching procedures in a staged environment before production rollout.
Workarounds
- Place a web application firewall in front of Oracle E-Business Suite and block requests to Demand Signal Repository Internal Operations endpoints from untrusted sources until patches are applied.
- Disable or restrict access to the Demand Signal Repository module for accounts that do not require it.
- Increase logging verbosity on the application tier to accelerate identification of exploitation attempts during the patch window.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.