CVE-2026-83112: Oracle Lease Management Privilege Escalation

CVE-2026-83112 Overview

CVE-2026-83112 is a privilege escalation 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 12.2.7 through 12.2.15. A high-privileged attacker with network access over HTTP can exploit the weakness to compromise Oracle Lease and Finance Management. Successful exploitation results in full takeover of the affected module, with impacts to confidentiality, integrity, and availability. The weakness is classified under CWE-269: Improper Privilege Management.

Critical Impact
Successful exploitation grants an authenticated attacker complete takeover of Oracle Lease and Finance Management, including access to sensitive financial and lease data.

Affected Products

Oracle E-Business Suite - Oracle Lease and Finance Management 12.2.7
Oracle E-Business Suite - Oracle Lease and Finance Management versions 12.2.8 through 12.2.14
Oracle E-Business Suite - Oracle Lease and Finance Management 12.2.15

Discovery Timeline

2026-09-15 - CVE-2026-83112 published to the National Vulnerability Database
2026-09-17 - CVE-2026-83112 last modified in NVD

Technical Details for CVE-2026-83112

Vulnerability Analysis

CVE-2026-83112 affects the Internal Operations component of Oracle Lease and Finance Management. The vulnerability enables an authenticated attacker holding high privileges to escalate access and take over the module. Exploitation occurs over the network using HTTP and does not require user interaction. The attack complexity is low, meaning a working exploitation path does not depend on specialized conditions. Impacts extend across confidentiality, integrity, and availability, indicating that the attacker can read protected financial data, modify lease records, and disrupt module operations.

Root Cause

The underlying weakness is improper privilege management [CWE-269]. In this class of flaw, the application fails to correctly enforce privilege boundaries between authenticated roles. An account that legitimately holds elevated Oracle E-Business Suite permissions can perform actions or reach functionality that should be restricted to a narrower administrative scope within the Lease and Finance Management module. Oracle has not published detailed root-cause information beyond the Critical Patch Update advisory.

Attack Vector

Exploitation requires network reachability to the Oracle E-Business Suite HTTP endpoints exposing Oracle Lease and Finance Management. The attacker must already possess a valid high-privileged account within the application. From that position, the attacker issues crafted HTTP requests against the Internal Operations component to obtain unauthorized control of the module. No client-side interaction or social engineering is required. Refer to the Oracle Security Alert for advisory details.

Detection Methods for CVE-2026-83112

Indicators of Compromise

Unexpected administrative or configuration changes within the Oracle Lease and Finance Management module performed by accounts outside a normal change window.
Anomalous HTTP requests to Oracle E-Business Suite endpoints associated with the Internal Operations component of Lease and Finance Management.
New or modified privileged responsibilities assigned to Oracle E-Business Suite users without a corresponding change ticket.

Detection Strategies

Monitor Oracle E-Business Suite audit tables (FND_LOGINS, FND_UNSUCCESSFUL_LOGINS, and responsibility change logs) for unusual privileged activity targeting the Lease and Finance Management module.
Correlate application-tier HTTP access logs with database-tier audit trails to identify high-privileged sessions performing configuration changes in the Internal Operations component.
Alert on privilege changes to accounts holding Oracle Applications system administrator or Lease and Finance responsibilities.

Monitoring Recommendations

Enable Oracle E-Business Suite Sign-On Audit at the FORM level for privileged responsibilities tied to Lease and Finance Management.
Forward E-Business Suite application, database, and web-tier logs to a centralized SIEM for long-term retention and behavioral analytics.
Establish a baseline of normal administrative activity in the Lease and Finance Management module and alert on deviations.

How to Mitigate CVE-2026-83112

Immediate Actions Required

Apply the fixes referenced in the Oracle Critical Patch Update advisory covering Oracle E-Business Suite 12.2.7 through 12.2.15.
Review and reduce the number of accounts holding high-privileged responsibilities within Oracle E-Business Suite, particularly for Lease and Finance Management.
Rotate credentials for privileged Oracle E-Business Suite accounts and enforce multi-factor authentication where supported.

Patch Information

Oracle addressed CVE-2026-83112 as part of a Security Alert for Oracle E-Business Suite. Administrators should consult the Oracle Security Alert for the specific patch identifiers applicable to versions 12.2.7 through 12.2.15 and follow Oracle's documented application of E-Business Suite patch sets and post-install steps.

Workarounds

Restrict network access to Oracle E-Business Suite HTTP endpoints so that only trusted internal networks and administrative jump hosts can reach the application tier.
Temporarily revoke Lease and Finance Management privileged responsibilities from accounts that do not require them until patching is completed.
Enforce strict change control and session recording for any remaining high-privileged Oracle E-Business Suite users.

bash

# Configuration example: restrict inbound HTTP access to the E-Business Suite application tier
# Replace <trusted_admin_subnet> with your administrative network range
iptables -A INPUT -p tcp --dport 8000 -s <trusted_admin_subnet> -j ACCEPT
iptables -A INPUT -p tcp --dport 8000 -j DROP