CVE-2026-83436 Overview
CVE-2026-83436 is a high-severity vulnerability in the Oracle Depot Repair product of Oracle E-Business Suite, specifically within the Recall Management component. The flaw affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access over HTTP can exploit the issue without user interaction. Successful exploitation grants unauthorized access to all Oracle Depot Repair data and can cause a partial denial of service. Oracle addressed the issue in the September 2026 Critical Security Patch Update.
Critical Impact
Authenticated network attackers can read all data accessible to Oracle Depot Repair and degrade service availability without user interaction.
Affected Products
- Oracle E-Business Suite — Oracle Depot Repair, version 12.2.3
- Oracle E-Business Suite — Oracle Depot Repair, versions 12.2.4 through 12.2.14
- Oracle E-Business Suite — Oracle Depot Repair, version 12.2.15
Discovery Timeline
- 2026-09-15 - CVE-2026-83436 published to the National Vulnerability Database
- 2026-09-16 - Last updated in NVD database
Technical Details for CVE-2026-83436
Vulnerability Analysis
The vulnerability resides in the Recall Management component of Oracle Depot Repair, which handles product recall workflows within the Oracle E-Business Suite. An authenticated user with only low privileges can send crafted HTTP requests to the affected component. The successful attacker gains read access to the full set of data accessible to the Depot Repair application. The same request path can also trigger partial denial-of-service conditions in the module. Impact remains scoped to the vulnerable component, with no integrity impact reported.
Root Cause
Oracle has not publicly disclosed the underlying defect class for CVE-2026-83436, and no CWE identifier is assigned. Based on the CVSS metrics, the vulnerability involves inadequate authorization enforcement in a Recall Management request handler, allowing a low-privileged user to reach data and code paths reserved for higher-trust roles.
Attack Vector
Exploitation occurs over the network via HTTP against a reachable Oracle E-Business Suite deployment. The attacker requires valid, low-privileged credentials to the application. No user interaction and no elevated privileges are needed. Because Depot Repair is often reachable from internal user networks and, in some deployments, from partner or field-service networks, the exposed attack surface can be broad. Attackers can chain the data disclosure with follow-on reconnaissance against related E-Business Suite modules.
No public proof-of-concept or exploit code is available at this time. See the Oracle Security Alert CSPU Sep 2026 for vendor technical details.
Detection Methods for CVE-2026-83436
Indicators of Compromise
- Unusual volumes of HTTP requests from low-privileged E-Business Suite user accounts to Depot Repair Recall Management endpoints.
- Access patterns that traverse recall records outside a user's expected assigned scope or organization.
- Application or database errors and timeouts correlated with repeated requests to the same Depot Repair URLs, indicating partial DoS attempts.
Detection Strategies
- Enable and centralize Oracle E-Business Suite application audit logging for Depot Repair modules, focusing on Recall Management transactions.
- Baseline typical request rates and data-access volume per user role, then alert on deviations.
- Correlate web-tier access logs with database audit trails to identify authenticated sessions returning unusually large record sets.
Monitoring Recommendations
- Forward Oracle HTTP Server, WebLogic, and Depot Repair application logs into a centralized analytics platform for correlation.
- Monitor authentication events for low-privileged accounts that suddenly access Recall Management functionality for the first time.
- Track error and availability metrics for Depot Repair endpoints to detect partial denial-of-service activity early.
How to Mitigate CVE-2026-83436
Immediate Actions Required
- Apply the fixes delivered in the Oracle Critical Security Patch Update for September 2026 to all Oracle E-Business Suite 12.2.3 through 12.2.15 environments.
- Inventory Depot Repair deployments and confirm patch level after installation.
- Rotate credentials for any low-privileged accounts suspected of misuse and audit their recent Depot Repair activity.
Patch Information
Oracle released fixes for CVE-2026-83436 as part of the September 2026 Critical Security Patch Update. Administrators should follow the guidance in the Oracle Security Alert CSPU Sep 2026 and apply the appropriate E-Business Suite 12.2 patch. Oracle recommends staying on actively supported patch levels because prior CPUs may be prerequisites.
Workarounds
- Restrict network access to the Oracle E-Business Suite front end so that Depot Repair is reachable only from trusted internal networks or via VPN.
- Enforce least-privilege responsibilities and remove Depot Repair Recall Management access from accounts that do not require it.
- Place a web application firewall in front of the E-Business Suite HTTP tier and alert on anomalous request rates to Depot Repair URLs until patching completes.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
