CVE-2026-46865: Oracle Enterprise Manager Privilege Escalation

CVE-2026-46865 Overview

CVE-2026-46865 is a high-severity vulnerability in the Oracle Enterprise Manager Base Platform, specifically within the Extensibility Framework component. The flaw affects supported versions 13.5 and 24.1. A high-privileged attacker with local logon access to the infrastructure where Oracle Enterprise Manager Base Platform executes can exploit this weakness to compromise the platform.

Because the vulnerability triggers a scope change, successful exploitation can extend impact beyond Oracle Enterprise Manager Base Platform to additional products in the environment. Oracle classifies the issue under improper access control [CWE-284] and confirms full confidentiality, integrity, and availability impact.

Critical Impact
Successful exploitation results in complete takeover of Oracle Enterprise Manager Base Platform with cascading impact to additional connected Oracle products.

Affected Products

Oracle Enterprise Manager Base Platform 13.5.0.0
Oracle Enterprise Manager Base Platform 24.1.0.0.0
Oracle Enterprise Manager (Extensibility Framework component)

Discovery Timeline

2026-06-17 - CVE-2026-46865 published to NVD
2026-06-18 - Last updated in NVD database
2026-06-17 - Oracle publishes security alert addressing the vulnerability

Technical Details for CVE-2026-46865

Vulnerability Analysis

The vulnerability resides in the Extensibility Framework of Oracle Enterprise Manager Base Platform. The Extensibility Framework manages plug-ins, metadata, and custom monitoring extensions used across Enterprise Manager deployments. Improper access controls within this component allow an authenticated, high-privileged user with local infrastructure access to subvert intended boundaries.

The attack carries a scope change, meaning compromise extends beyond the vulnerable component to other resources managed by Enterprise Manager. Because Enterprise Manager orchestrates databases, middleware, and engineered systems, takeover of the base platform provides control planes into a wide set of downstream targets.

The EPSS score of 0.168% reflects current exploitation probability based on observed activity. No public proof-of-concept or in-the-wild exploitation has been reported at the time of disclosure.

Root Cause

Oracle attributes the issue to improper access control [CWE-284] within the Extensibility Framework. The framework fails to fully restrict privileged operations available to authenticated infrastructure users, allowing privilege misuse against platform components.

Attack Vector

Exploitation requires local logon to the infrastructure hosting Oracle Enterprise Manager Base Platform and elevated privileges on that host. No user interaction is required. The combination of local access and high-privilege requirement narrows the threat to insiders, compromised administrative accounts, or attackers who have already gained a foothold on the management server.

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

Detection Methods for CVE-2026-46865

Indicators of Compromise

Unexpected modifications to Enterprise Manager plug-in metadata, extension archives, or emctl configuration files under the Oracle Management Server (OMS) home.
Anomalous local logons to Enterprise Manager hosts using privileged operating system accounts such as oracle or oraemd.
Unauthorized deployment or registration of custom plug-ins or metric extensions through the Extensibility Framework.
Outbound connections or command execution originating from OMS processes that target managed downstream targets without a corresponding job submission.

Detection Strategies

Audit Enterprise Manager repository tables and EM_EXT metadata for unauthorized plug-in registrations or modifications.
Correlate operating system audit logs on OMS hosts with Enterprise Manager job history to identify privileged actions lacking a legitimate workflow.
Monitor process lineage on OMS hosts for child processes spawned by the Oracle Management Server outside expected agent communications.

Monitoring Recommendations

Enable Oracle Enterprise Manager audit logging at the highest level and forward records to a central SIEM for retention and correlation.
Track use of high-privilege Enterprise Manager roles such as EM_ALL_ADMINISTRATOR and SUPER_USER for changes to plug-ins or framework configuration.
Alert on file integrity changes to $OMS_HOME/plugins/ and related Extensibility Framework directories on management hosts.

How to Mitigate CVE-2026-46865

Immediate Actions Required

Apply the Critical Security Patch Update referenced in the Oracle Security Alert for affected versions 13.5 and 24.1.
Inventory all Oracle Enterprise Manager Base Platform instances and prioritize patching for systems managing production databases and engineered systems.
Review and reduce the number of accounts holding high-privilege Enterprise Manager roles and local administrative access to OMS hosts.
Rotate credentials for privileged Enterprise Manager and operating system accounts on management hosts after patching.

Patch Information

Oracle has released fixes in the June 2026 Critical Security Patch Update. Administrators should apply the patch bundle that corresponds to their Enterprise Manager Base Platform release (13.5 or 24.1). Patch details and download links are available in the Oracle Security Alert.

Workarounds

Restrict local logon to OMS infrastructure hosts to a minimal set of administrators using host-based access controls.
Enforce multi-factor authentication and privileged access management for accounts with Enterprise Manager administrative roles.
Segment management network traffic so that OMS hosts cannot be reached from general user networks.
Disable or remove unused custom plug-ins and metric extensions to reduce the Extensibility Framework attack surface.

bash

# Configuration example: review privileged EM users and audit policy
# Run as the EM repository owner via SQL*Plus
SELECT grantee, granted_role FROM dba_role_privs
  WHERE granted_role IN ('EM_ALL_ADMINISTRATOR','SUPER_USER');

# Verify Enterprise Manager audit settings
emcli get_operations_list
emcli update_audit_settings -audit_switch="ENABLE" -operations_to_enable="ALL"