CVE-2026-83158: Oracle E-Business Suite Auth Bypass Flaw

CVE-2026-83158 Overview

CVE-2026-83158 is an access control vulnerability [CWE-284] in the Oracle Applications Manager component of Oracle E-Business Suite. The flaw resides in the Command Line - RapidClone subcomponent and affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with logon access to the infrastructure hosting Oracle Applications Manager can compromise confidentiality and integrity of all data accessible to the product. Successful exploitation allows unauthorized creation, deletion, or modification of critical data, as well as complete read access to Oracle Applications Manager data. Oracle published the fix in its September 2026 Critical Patch Update.

Critical Impact
A local, low-privileged attacker can gain full read and write access to all data managed by Oracle Applications Manager, undermining the integrity of E-Business Suite deployments.

Affected Products

Oracle E-Business Suite — Oracle Applications Manager version 12.2.3
Oracle E-Business Suite — Oracle Applications Manager versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Applications Manager version 12.2.15

Discovery Timeline

2026-09-15 - CVE-2026-83158 published to the National Vulnerability Database
2026-09-17 - Last updated in NVD database

Technical Details for CVE-2026-83158

Vulnerability Analysis

The vulnerability resides in the RapidClone command line facility within Oracle Applications Manager, which is used to duplicate E-Business Suite environments. RapidClone executes with elevated privileges over sensitive configuration, database connection, and application state data. Improper access control [CWE-284] in this command line interface allows a low-privileged operating system user on the host to invoke functionality that should be restricted to administrative accounts. The attack does not require user interaction and can be executed with low complexity, but it is limited to the local infrastructure where Applications Manager runs.

Root Cause

The root cause is a missing or insufficient authorization check in the RapidClone command line interface. Oracle Applications Manager fails to properly restrict which local principals may invoke privileged clone operations. As a result, any user with a valid logon session on the host inherits the ability to interact with sensitive management functionality.

Attack Vector

Exploitation requires local access to the server running Oracle Applications Manager and a valid low-privileged account. The attacker invokes the affected RapidClone command line entry points directly. Because the scope is unchanged and availability impact is absent, the attacker retains the ability to read and modify all Applications Manager data without triggering service disruption that could aid detection. No public proof-of-concept exploit is currently listed, and the CVE is not on the CISA Known Exploited Vulnerabilities catalog.

No verified proof-of-concept code is publicly available. Refer to the Oracle Security Alert - September 2026 for vendor-supplied technical details.

Detection Methods for CVE-2026-83158

Indicators of Compromise

Execution of adcfgclone.pl, adclone.pl, or other RapidClone scripts by non-administrative operating system accounts.
Unexpected modifications to Applications Manager configuration files, context files, or environment files under $APPL_TOP and $INST_TOP.
New or altered database connection artifacts, credential wallets, or dbc files not tied to a scheduled clone activity.

Detection Strategies

Baseline authorized RapidClone operators and alert on invocations by any account outside that baseline.
Enable operating system auditing (auditd on Linux) for execution of RapidClone binaries and reads of sensitive Applications Manager configuration paths.
Correlate shell command history with change-management tickets to identify unsanctioned clone activity.

Monitoring Recommendations

Forward host process telemetry and file integrity events from Applications Manager servers into a centralized analytics platform for anomaly detection.
Monitor Oracle Applications Manager application logs for administrative actions initiated from unexpected sessions or user IDs.
Alert on privilege changes and new local account creations on E-Business Suite hosts.

How to Mitigate CVE-2026-83158

Immediate Actions Required

Apply the Oracle Critical Patch Update from September 2026 to all Oracle Applications Manager instances running versions 12.2.3 through 12.2.15.
Audit local accounts on E-Business Suite servers and remove interactive logon rights that are not strictly required.
Review recent RapidClone invocations and configuration file changes for signs of unauthorized activity.

Patch Information

Oracle addressed the vulnerability in its September 2026 security release. Administrators should consult the Oracle Security Alert - September 2026 for the specific patch identifiers and installation instructions applicable to their E-Business Suite release.

Workarounds

Restrict shell access to Applications Manager hosts to a minimal set of administrative accounts pending patch deployment.
Enforce filesystem permissions on RapidClone scripts and the $ORACLE_HOME directory to block execution by unauthorized users.
Segment E-Business Suite infrastructure from general-purpose systems to limit the population of potential local attackers.

bash

# Example: restrict execution of RapidClone scripts to the oracle account
chown oracle:dba $ORACLE_HOME/appsutil/scripts/*/adcfgclone.pl
chmod 700 $ORACLE_HOME/appsutil/scripts/*/adcfgclone.pl

# Enable auditd rules to log RapidClone invocations
auditctl -w $ORACLE_HOME/appsutil/clone -p rwxa -k oracle_rapidclone