External risk intelligence

Oracle Enterprise Manager Base Platform Metadata Plugin Vulnerability Allows Takeover

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-46853

A critical vulnerability exists in Oracle Enterprise Manager Base Platform, allowing unauthenticated attackers with network access to achieve platform takeover through user interaction. This issue could impact additional products beyond the Base Platform itself, necessitating a review of affected instances and their cr

Cross-site Scripting

Oracle Enterprise Manager Base Platform

13.5.0.024.1.0.0.0

Halo Surface Signal

Possible · external exposure

3Halo Surface Signal

Oracle Enterprise Manager is typically deployed within internal administrative segments to manage enterprise infrastructure. While it utilizes HTTP for network access and can theoretically be exposed, it is not standard practice to position these management platforms directly on the public internet, making exposure uncommon despite the network-based attack vector.

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in Oracle Enterprise Manager Base Platform, a system used for managing enterprise infrastructure. This issue is easily exploitable by an unauthenticated attacker over a network, and a successful attack could lead to a complete takeover of the platform, potentially impacting other connected products.

  • Unauthenticated attackers can compromise management systems.
  • Protects core infrastructure management capabilities.
  • Confirm if this system is in scope and assess risk.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker can reach the Oracle Enterprise Manager Base Platform over the network using HTTP. By tricking a user into interacting with a crafted element, the attacker can trigger a vulnerability within the Metadata Plugin, potentially leading to a complete takeover of the platform and affecting other products.

  • Network access via HTTP required.
  • Requires user interaction to trigger.
  • Leads to platform takeover and scope change.

Live Threat

Current exploitation, exposure, and threat context

An unauthenticated attacker with network access could compromise the Oracle Enterprise Manager Base Platform when human interaction is involved. This vulnerability could impact additional products beyond the Base Platform itself. Successful exploitation could lead to a complete takeover of the affected Oracle Enterprise Manager Base Platform.

  • Oracle Enterprise Manager Base Platform is at risk.
  • Network access and user interaction enable exposure.
  • Complete takeover of the platform is possible.

Operational Fix

Recommended remediation, mitigation, and detection steps

Attackers can compromise Oracle Enterprise Manager Base Platform via an easily exploitable, unauthenticated network vulnerability requiring user interaction, potentially leading to system takeover and impacting other products. Technical leaders and security teams must first identify all instances of the affected Oracle Enterprise Manager Base Platform, assess their network reachability and business criticality, pinpoint the accountable system owners, and then prioritize remediation efforts based on identified risks.

  • Ownership resides with Oracle Enterprise Manager administrators.
  • Verify external accessibility and business criticality first.
  • Plan remediation considering maintenance windows and vendor coordination.

Supplementary metadata

PCI scan relevance

Yes

CVE-2026-46853 — Halo PCI Relevance: Yes. Under typical PCI ASV external scan criteria, this issue may be flagged for scan prioritization.

This critical vulnerability in Oracle Enterprise Manager Base Platform is exploitable remotely and could lead to a full system takeover. Its high CVSS score makes it relevant for PCI scans.

Scan-prioritization guidance only—not a PCI DSS certification or ASV attestation.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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Frequently asked questions

What is the Oracle Enterprise Manager Base Platform?

It is a central management framework used by organizations to monitor, maintain, and automate their enterprise IT infrastructure. The Metadata Plugin is a specific component within this platform that handles data definitions, which are essential for the software to correctly organize and interact with the diverse array of hardware and software assets it oversees.

What does CWE-79 mean for CVE-2026-46853?

This CVE involves a cross-site scripting (CWE-79) vulnerability. In simple terms, this means the Metadata Plugin fails to properly sanitize input, allowing an attacker to inject malicious scripts into the platform. When a user views the affected page, their browser unknowingly executes this script, which can then be used to gain unauthorized control over the platform.

How is this vulnerability triggered?

An attacker must send a crafted request over the network to the platform. However, simply reaching the server is not enough; the attack only succeeds if a legitimate user is tricked into interacting with the malicious content, such as clicking a link. Automated background scans or requests without human participation will not trigger the vulnerability.

Is my system at risk according to Halo Surface Signal?

Because this management platform is usually tucked away inside private administrative networks rather than on the open web, your actual risk depends on your specific network design. While the technical attack vector is network-based, Halo Surface Signal suggests that direct exposure to the public internet is uncommon, though internal access by unauthorized users remains a concern.

What should I do if I run this software?

First, locate every instance of the affected platform within your environment and identify the team responsible for managing them. Assess whether these systems are reachable from untrusted network segments. Once your inventory is mapped, coordinate with your system administrators to review official vendor guidance and plan for the necessary updates during your next maintenance window.

References

Sources and related resources

Primary sources: NVD, CVE.org.

NVDPublished