CVE-2026-61337 Overview
CVE-2026-61337 is an access control vulnerability in the Oracle Lease and Finance Management product, part of Oracle E-Business Suite. The flaw resides in the Internal Operations component and affects supported versions 12.2.11 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit this vulnerability to compromise Oracle Lease and Finance Management. Successful exploitation results in complete takeover of the application, with impacts to confidentiality, integrity, and availability. The weakness maps to [CWE-284: Improper Access Control].
Critical Impact
Successful exploitation results in full takeover of Oracle Lease and Finance Management, exposing confidential financial data and enabling manipulation of leasing records.
Affected Products
- Oracle Lease and Finance Management 12.2.11
- Oracle Lease and Finance Management 12.2.12 through 12.2.14
- Oracle Lease and Finance Management 12.2.15
Discovery Timeline
- 2026-07-21 - CVE CVE-2026-61337 published to NVD
- 2026-07-22 - Last updated in NVD database
Technical Details for CVE-2026-61337
Vulnerability Analysis
The vulnerability affects the Internal Operations component of Oracle Lease and Finance Management. An authenticated attacker holding low-level privileges can send crafted HTTP requests to reach code paths that lack sufficient access control checks. Successful exploitation yields full compromise of the application, including its data and administrative functions. Oracle rates the flaw as difficult to exploit, indicating specific preconditions or environmental factors must be satisfied. The impact spans confidentiality, integrity, and availability, meaning attackers can read sensitive lease data, alter records, and disrupt service.
Root Cause
The underlying weakness is improper access control ([CWE-284]). The Internal Operations component fails to correctly enforce authorization boundaries between low-privileged users and privileged operations. This gap allows a valid but limited account to invoke functions that should be restricted to administrators.
Attack Vector
Exploitation occurs over the network through HTTP. The attacker must already possess valid credentials with low privileges on the target instance. From that foothold, the attacker issues requests to Internal Operations endpoints that bypass authorization logic. No user interaction is required, and the scope remains unchanged, meaning the compromise stays within the vulnerable component's authority.
No verified public proof-of-concept code is available at the time of writing. Refer to the Oracle Critical Patch Update July 2026 advisory for vendor technical details.
Detection Methods for CVE-2026-61337
Indicators of Compromise
- Unexpected HTTP requests from low-privileged E-Business Suite accounts targeting Internal Operations URLs within Oracle Lease and Finance Management.
- Anomalous session activity in Oracle E-Business Suite audit logs showing privileged operations initiated by non-administrative users.
- Sudden changes to lease contracts, financial parameters, or user roles that do not correspond to approved change requests.
Detection Strategies
- Enable and review Oracle E-Business Suite Sign-On Audit and Page Access Tracking for the Lease and Finance Management responsibility.
- Correlate application-layer HTTP access logs with database audit records to identify privilege boundary violations.
- Baseline normal user behavior for Internal Operations endpoints and alert on deviations such as bulk record access or rare function invocations.
Monitoring Recommendations
- Forward Oracle E-Business Suite application, middle-tier, and database audit logs to a centralized SIEM for correlation.
- Alert on repeated HTTP 4xx/5xx responses followed by successful requests to the same Internal Operations endpoint, which may indicate probing.
- Monitor account provisioning changes and new administrative role assignments in the E-Business Suite user directory.
How to Mitigate CVE-2026-61337
Immediate Actions Required
- Apply the Oracle Critical Patch Update released in July 2026 to all affected Oracle Lease and Finance Management instances running versions 12.2.11 through 12.2.15.
- Inventory all Oracle E-Business Suite deployments and confirm patch levels for the Lease and Finance Management module.
- Review and reduce low-privileged account access to Lease and Finance Management responsibilities, enforcing least privilege.
Patch Information
Oracle addressed CVE-2026-61337 in the July 2026 Critical Patch Update. Administrators should download and apply the corresponding fixes documented in the Oracle Critical Patch Update July 2026 advisory. Test patches in a non-production environment before promoting them to production E-Business Suite instances.
Workarounds
- Restrict network access to Oracle E-Business Suite HTTP endpoints using firewall rules or a reverse proxy that limits access to trusted internal networks and VPN users.
- Disable or restrict the Lease and Finance Management responsibility for accounts that do not require it until patching is complete.
- Enforce multi-factor authentication for all E-Business Suite users to raise the cost of credential compromise required for exploitation.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
