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Oracle Enterprise Manager EUVDEUVD-2026-37349

| CVE-2026-46856 CRITICAL
Cross-site Scripting (XSS) (CWE-79)
2026-06-16 oracle
9.6
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify exposed OEM 13.5/24.1 console
  2. Delivery
    Craft malicious Metadata Plugin HTTP request
  3. Exploit
    Phish OEM operator to trigger request
  4. Execution
    Exploit scope-changing flaw in victim session
  5. Persist
    Take over OEM Base Platform
  6. Impact
    Pivot to managed databases and targets

Vulnerability Assessment

Weakness
CWE
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires (1) network HTTP reachability to an Oracle Enterprise Manager Base Platform 13.5 or 24.1 deployment's Metadata Plugin component, and (2) human interaction from a user other than the attacker - typically an authenticated OEM operator clicking a crafted link or visiting attacker-controlled content while logged in. No attacker authentication is needed (PR:N), and no non-default OEM configuration is called out by Oracle; limiting factors are the UI:R requirement and whether the OEM HTTP interface is reachable from the attacker's network position (deployments behind management VLANs / VPNs raise the bar).

Impact

All signals point to high real-world risk: CVSS 3.1 base score 9.6 with AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H means low-complexity, unauthenticated, network-borne exploitation with scope change and total CIA impact, limited only by required user interaction. EPSS data was not provided in the input, and the CVE is not in CISA KEV nor accompanied by a known POC, so exploitation is currently 'no public exploit identified at time of analysis.' Because OEM is a privileged management platform whose compromise typically cascades into databases and middleware (consistent with the stated scope change), defenders should treat this as a priority patch even without active exploitation evidence; the UI:R requirement is the main practical limiter and is easily satisfied by phishing OEM operators.

Exploit ScenarioDerived

An attacker hosts or emails a crafted URL that points at an OEM Metadata Plugin endpoint; when an OEM administrator with an active session clicks it, the request is processed in the victim's context and pivots into full takeover of the OEM Base Platform, with the scope change extending impact to the databases and targets OEM manages. No public exploit is identified at time of analysis, but the AC:L/UI:R profile makes phishing-based delivery highly practical once technical details circulate.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 16, 2026

Remote takeover of Oracle Enterprise Manager Base Platform 13.5 and 24.1 is possible when an unauthenticated attacker over HTTP coerces a victim user into interacting with a crafted request targeting the Metadata Plugin component. The flaw is scope-changing and yields full confidentiality, integrity, and availability impact on the platform and potentially adjacent products. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

RemediationAI

Apply the fixes shipped in Oracle's June 2026 Critical Patch Update (Patch available per vendor advisory) by following the version-specific patch guidance at https://www.oracle.com/security-alerts/cspujun2026.html for OEM 13.5 and 24.1. Until patches are deployed, restrict the OEM console and Metadata Plugin endpoints to a management VLAN or VPN, place a reverse proxy/WAF in front of the OEM HTTP listener to filter unexpected metadata-related requests, and instruct OEM operators not to click externally-sourced OEM links - accepting that network restrictions may break federated/remote admin workflows and that WAF rules can produce false positives against legitimate plugin metadata traffic. Do not delay patching by relying on these compensating controls alone, since UI:R is trivially achievable via phishing.

Affected VersionsENISA

Oracle Enterprise Manager Base Platform 13.5
Oracle Enterprise Manager Base Platform 24.1

Affected Packages

euvd oracle_enterprise_manager_base_platform no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Oracle Enterprise Manager Base Platform is the central management framework Oracle ships for monitoring databases, middleware, engineered systems, and cloud workloads across an enterprise estate. The vulnerable surface is the Metadata Plugin component, which handles plugin/metadata processing within OEM; the CPE 'cpe:2.3:a:oracle_corporation:oracle_enterprise_manager_base_platform' identifies the affected product line. No CWE is assigned, but the network/HTTP vector combined with required user interaction and a scope change is consistent with a client-coercion or injection-style flaw (e.g., reflected injection, deserialization, or SSRF-style coercion) that pivots from a user session into management-plane privileges.

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Severity by source

Vendor (oracle) PRIMARY 9.6 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vuln.today AI 9.6 CRITICAL

HTTP-reachable Metadata Plugin (AV:N/AC:L), no attacker auth (PR:N), requires victim operator interaction (UI:R), and compromise of OEM cascades into managed targets (S:C, C/I/A:H).

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Vulnerability in the Oracle Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Metadata Plugin). Supported versions that are affected are 13.5 and 24.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Enterprise Manager Base Platform. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Enterprise Manager Base Platform, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Enterprise Manager Base Platform. CVSS 3.1 Base Score 9.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Enterprise Manager Base Platform versions 13.5 and 24.1 contain a critical remote takeover vulnerability requiring no authentication, enabling attackers to gain complete control of these core infrastructure monitoring systems. Exploitation yields unrestricted access to platform databases, credentials, and managed system integrations, with potential lateral movement to connected enterprise resources. Organizations currently lack a vendor patch, creating indefinite exposure for all unmitigated instances of these versions.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict network access to Enterprise Manager to administrative networks only; disable external HTTP access and enforce HTTPS with TLS 1.2 minimum. (2) Deploy Web Application Firewall (WAF) rules to block requests to the Metadata Plugin component with anomalous patterns or payloads. (3) Implement mandatory multi-factor authentication for all administrative access. (4) Enable enhanced audit logging and real-time alerting on Metadata Plugin API activity and authentication attempts. (5) Establish network segmentation isolating Enterprise Manager from general corporate networks and internet-facing systems. (6) Conduct immediate configuration database backup and secure backup of all managed system credentials stored in Enterprise Manager. (7) Monitor vendor advisories weekly for patch availability and establish isolated test environment for rapid patch validation upon release.

Threat Intelligence Overview

EPSS Score
0.4%
Top 66% exploitable
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Very High
Technical Impact
Total

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +48
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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