CVE-2026-83165 Overview
CVE-2026-83165 is an access control vulnerability [CWE-284] in the Oracle Customer Interaction History product of Oracle E-Business Suite. The flaw resides in the User Interface component and affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access over HTTPS can exploit the weakness without user interaction. Successful exploitation results in full takeover of Oracle Customer Interaction History, with impact to confidentiality, integrity, and availability.
Critical Impact
Authenticated network attackers can take over Oracle Customer Interaction History and compromise stored customer engagement data.
Affected Products
- Oracle E-Business Suite — Oracle Customer Interaction History 12.2.3
- Oracle E-Business Suite — Oracle Customer Interaction History versions 12.2.4 through 12.2.14
- Oracle E-Business Suite — Oracle Customer Interaction History 12.2.15
Discovery Timeline
- 2026-09-15 - CVE-2026-83165 published to the National Vulnerability Database
- 2026-09-17 - Last updated in NVD database
Technical Details for CVE-2026-83165
Vulnerability Analysis
The vulnerability is categorized as Improper Access Control [CWE-284] in the User Interface component of Oracle Customer Interaction History. An authenticated user with only low privileges can send crafted HTTPS requests to the affected interface and gain control of the module. Because the scope remains unchanged, the impact is contained within Oracle Customer Interaction History, but all three security properties — confidentiality, integrity, and availability — are fully compromised.
Oracle Customer Interaction History stores cross-channel interaction records for customer service, marketing, and sales modules. Takeover of the module exposes historical customer communications, opens the door to data manipulation, and enables disruption of dependent E-Business Suite workflows.
Root Cause
The root cause is missing or insufficient access control enforcement in the User Interface layer of Oracle Customer Interaction History. Authorization checks fail to properly validate the privileges of the requesting user before executing sensitive operations. Oracle has not published low-level implementation details in the security alert.
Attack Vector
Exploitation requires network reachability to the E-Business Suite HTTPS endpoint and a valid low-privileged account. No user interaction is required. An attacker leverages the authenticated session to submit requests that bypass access restrictions in the User Interface component, resulting in module takeover. Refer to the Oracle Security Alert for vendor-supplied technical context.
Detection Methods for CVE-2026-83165
Indicators of Compromise
- Unexpected privileged actions in Oracle Customer Interaction History performed by low-privileged user accounts.
- Anomalous HTTPS request patterns targeting Customer Interaction History User Interface endpoints outside normal business hours.
- Modification or bulk export of interaction history records without corresponding case activity.
Detection Strategies
- Correlate E-Business Suite application audit logs with authentication events to flag privilege discrepancies between session role and executed operations.
- Baseline normal request volumes to Customer Interaction History endpoints and alert on statistical deviations.
- Review Oracle FND audit tables for unauthorized configuration or data changes tied to low-privilege accounts.
Monitoring Recommendations
- Forward Oracle E-Business Suite web tier and application logs to a centralized analytics platform for correlation.
- Enable Oracle audit policies on Customer Interaction History tables and monitor for schema-level changes.
- Track outbound data volumes from the E-Business Suite middle tier to identify potential exfiltration of interaction records.
How to Mitigate CVE-2026-83165
Immediate Actions Required
- Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert to all affected E-Business Suite environments.
- Inventory Oracle Customer Interaction History deployments running versions 12.2.3 through 12.2.15 and prioritize internet-exposed instances.
- Review and reduce low-privilege accounts with access to the Customer Interaction History module until patching is complete.
Patch Information
Oracle addressed CVE-2026-83165 in a scheduled security update. Administrators should review the Oracle Security Alert advisory for the specific patch identifiers applicable to their E-Business Suite release and apply them following Oracle's documented patch procedures.
Workarounds
- Restrict network access to E-Business Suite HTTPS endpoints using firewall rules, VPN, or reverse proxy allow-listing until the patch is applied.
- Enforce stricter authentication requirements, including multi-factor authentication, for all users of Oracle E-Business Suite.
- Audit and revoke unused or excessive responsibilities assigned to accounts that can reach the Customer Interaction History User Interface.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
