CVE-2026-46868: Oracle Enterprise Manager Privilege Escalation

CVE-2026-46868 Overview

CVE-2026-46868 affects the Extensibility Framework component of Oracle Enterprise Manager Base Platform. The flaw allows a high-privileged attacker with network access via HTTPS to compromise the platform. Successful exploitation results in full takeover of Oracle Enterprise Manager Base Platform, with impact to confidentiality, integrity, and availability.

Oracle confirmed the issue in versions 13.5 and 24.1. The vulnerability is mapped to [CWE-284] Improper Access Control. Oracle published the fix in its June 2026 Critical Patch Update Security Alert.

Critical Impact
An authenticated attacker with high privileges on the network can fully take over Oracle Enterprise Manager Base Platform, including managed targets and stored credentials.

Affected Products

Oracle Enterprise Manager Base Platform 13.5.0.0
Oracle Enterprise Manager Base Platform 24.1.0.0.0
Component: Extensibility Framework

Discovery Timeline

2026-06-17 - CVE-2026-46868 published to NVD
2026-06-18 - Last updated in NVD database
2026-06-17 - Oracle published the Critical Patch Update Security Alert addressing this issue

Technical Details for CVE-2026-46868

Vulnerability Analysis

The vulnerability resides in the Extensibility Framework of Oracle Enterprise Manager Base Platform. This component handles plug-ins, metadata extensions, and management modules that expand the platform's monitoring capabilities. Improper access control in this framework permits an authenticated user with high privileges to perform actions beyond their intended scope.

Oracle classifies the flaw as easily exploitable across the network over HTTPS. No user interaction is required. Exploitation does not require chaining with other vulnerabilities. The scope remains unchanged, but confidentiality, integrity, and availability impacts are all high, indicating that a successful attack leads to complete compromise of the Enterprise Manager instance.

Enterprise Manager often holds credentials and management agents for downstream Oracle Database, Fusion Middleware, and engineered systems. A takeover of the management plane therefore creates a pivot point into the broader Oracle estate.

Root Cause

The root cause is improper access control [CWE-284] within the Extensibility Framework. The framework does not adequately validate the authority of a calling user before performing privileged operations. A user already authenticated to the platform can invoke functionality reserved for administrative roles.

Attack Vector

The attack vector is network-based over HTTPS to the Oracle Enterprise Manager console or its management endpoints. The attacker must already possess high-privileged credentials on the target. From this position, the attacker abuses the Extensibility Framework to escalate to full platform takeover. No verified public proof-of-concept code is available at the time of publication. Refer to the Oracle Security Alert for vendor-supplied technical details.

Detection Methods for CVE-2026-46868

Indicators of Compromise

Unexpected plug-in deployments, metadata extensions, or management module uploads through the Extensibility Framework.
Administrative role assignments or credential changes made by accounts that do not normally perform such actions.
HTTPS sessions to the Oracle Management Service (OMS) originating from unusual source addresses or service accounts.
New scheduled jobs, scripts, or agent commands targeting managed databases or middleware shortly after suspicious login events.

Detection Strategies

Audit EM_USER and EM_PRIVILEGE repository tables for privilege changes that correlate with Extensibility Framework activity.
Enable and review OMS access logs and emctl audit logs for plug-in deployment, undeployment, and metadata extension calls.
Correlate Enterprise Manager authentication events with subsequent privileged operations to identify lateral movement from compromised admin accounts.

Monitoring Recommendations

Forward OMS and repository database audit logs to a centralized SIEM for retention and correlation.
Alert on any deployment of unsigned or unexpected plug-ins to the Extensibility Framework.
Monitor outbound activity from managed agents for signs of credential reuse against downstream Oracle Database or Fusion Middleware targets.

How to Mitigate CVE-2026-46868

Immediate Actions Required

Apply the fixes from the Oracle June 2026 Critical Patch Update Security Alert to all Enterprise Manager 13.5 and 24.1 deployments.
Rotate credentials stored in the Enterprise Manager credential repository, including named credentials and preferred credentials, after patching.
Review and reduce the number of accounts holding EM_ALL_ADMINISTRATOR or equivalent high privileges.
Restrict network reachability of the OMS console to administrative networks and bastion hosts.

Patch Information

Oracle addressed CVE-2026-46868 in the June 2026 Critical Patch Update Security Alert. Patches are available for Oracle Enterprise Manager Base Platform 13.5 and 24.1. Administrators should download and apply the relevant bundle patches as documented in the Oracle Security Alert. Validate patch application by checking the OPatch inventory on the OMS host and confirming the advertised patch identifier is present.

Workarounds

No vendor-supplied workaround is published; patching is the supported remediation path.
As a compensating control, place the OMS console behind a VPN or zero-trust gateway and enforce multi-factor authentication on all administrator accounts.
Limit Extensibility Framework operations to a dedicated, monitored maintenance window and revoke standing access between deployments.

bash

# Verify the applied patch level on the OMS host
$ORACLE_HOME/OPatch/opatch lspatches
$ORACLE_HOME/OPatch/opatch lsinventory | grep -i "Enterprise Manager"

# Restrict OMS console to an administrative subnet (example using iptables)
iptables -A INPUT -p tcp --dport 7803 -s 10.10.50.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7803 -j DROP