CVE-2026-70684: Oracle Enterprise Manager Auth Bypass Flaw

CVE-2026-70684 Overview

CVE-2026-70684 is a high-severity vulnerability in the Oracle Enterprise Manager Base Platform, specifically within the Agent Next Gen component. The flaw affects supported versions 13.5 and 24.1. An unauthenticated attacker with network access via HTTP can exploit this issue to compromise the platform. Successful exploitation results in full takeover of Oracle Enterprise Manager Base Platform, impacting confidentiality, integrity, and availability. Oracle disclosed the issue in the Oracle Security Alert CSPUAUG2026 advisory.

Critical Impact
Successful exploitation leads to complete takeover of Oracle Enterprise Manager Base Platform, exposing managed database infrastructure and monitored assets across the enterprise.

Affected Products

Oracle Enterprise Manager Base Platform version 13.5
Oracle Enterprise Manager Base Platform version 24.1
Oracle Enterprise Manager Agent Next Gen component

Discovery Timeline

2026-08-18 - CVE-2026-70684 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70684

Vulnerability Analysis

The vulnerability resides in the Agent Next Gen component of Oracle Enterprise Manager Base Platform. Oracle classifies the flaw as difficult to exploit, requiring specific conditions beyond the attacker's direct control. However, no authentication or user interaction is required. A successful attack yields full takeover of the platform, allowing an attacker to read, modify, and disrupt any data managed by Enterprise Manager.

Oracle Enterprise Manager centrally manages Oracle Database fleets, middleware, and applications. Compromise of the base platform typically cascades into the monitored infrastructure. Agents run with privileged access to targets they monitor, magnifying the impact of any agent-tier compromise.

Root Cause

Oracle has not disclosed the specific technical root cause in the published advisory. The scope remains unchanged (S:U), indicating the exploitation stays within the vulnerable component's security authority. No CWE identifier has been assigned in the NVD entry.

Attack Vector

The attack originates over the network via HTTP against the Agent Next Gen listener. The attacker requires no credentials and no user interaction. Exploitation complexity is high, meaning the attacker must overcome conditions such as timing, configuration, or specific target state to succeed.

Refer to the Oracle Security Alert CSPUAUG2026 for vendor-supplied technical details. No public proof-of-concept code has been observed at the time of writing.

Detection Methods for CVE-2026-70684

Indicators of Compromise

Unexpected HTTP requests to Enterprise Manager Agent Next Gen listener ports from untrusted network segments.
New or modified administrative accounts within the Oracle Enterprise Manager Base Platform console.
Unrecognized job submissions, target additions, or agent registrations in the OMS repository.
Outbound connections from Enterprise Manager hosts to unfamiliar external destinations following inbound HTTP traffic.

Detection Strategies

Enable and centralize Oracle Enterprise Manager audit logs, forwarding them to a SIEM for correlation.
Baseline normal HTTP traffic to agent endpoints and alert on anomalous request volumes or methods.
Inspect web server and agent logs for malformed or unusually large HTTP payloads directed at Agent Next Gen.

Monitoring Recommendations

Monitor Oracle Enterprise Manager processes for unexpected child processes or shell invocations.
Track configuration changes to the OMS repository, agent bindings, and privilege grants.
Alert on privilege escalations or role changes within the Enterprise Manager access control model.

How to Mitigate CVE-2026-70684

Immediate Actions Required

Apply the Oracle Critical Security Update referenced in Oracle Security Alert CSPUAUG2026 to all Enterprise Manager 13.5 and 24.1 deployments.
Restrict network access to Enterprise Manager management and agent ports to trusted administrative networks only.
Audit administrative accounts, target registrations, and job history for unauthorized changes.
Rotate credentials and API keys associated with Enterprise Manager service accounts after patching.

Patch Information

Oracle addressed CVE-2026-70684 in the August 2026 Critical Security Update. Detailed patch mapping and download instructions are available in the Oracle Security Alert CSPUAUG2026. Apply the patch to both Oracle Management Service (OMS) and all deployed agents on supported versions 13.5 and 24.1.

Workarounds

Place Enterprise Manager infrastructure behind a segmented management VLAN with strict firewall rules limiting inbound HTTP.
Terminate TLS at a reverse proxy that enforces IP allowlists in front of the Agent Next Gen listener.
Disable or firewall unused agent-facing HTTP endpoints until the patch can be applied.

bash

# Example iptables restriction limiting HTTP access to Agent Next Gen
# Replace 10.0.0.0/24 with your management subnet and 3872 with your agent port
iptables -A INPUT -p tcp --dport 3872 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 3872 -j DROP