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Oracle Enterprise Manager EUVDEUVD-2026-105940

| CVE-2026-101528 CRITICAL
2026-10-20 secalert_us@oracle.com GHSA-gqmj-694r-2pm2
9.9
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Authenticate with low-privilege OEM account
  2. Delivery
    Send crafted HTTP request to Data Guard Management
  3. Exploit
    Exploit flaw to take over OEM
  4. Execution
    Cross scope boundary to managed databases
  5. Impact
    Compromise additional Oracle products

Vulnerability Assessment

Exploitation Conditions

Exploitation requires network HTTP access to an Oracle Enterprise Manager for Oracle Database console (version 13.5 or 24.1) AND a valid low-privileged account on that console (CVSS PR:L) - it is NOT unauthenticated. The vulnerable surface is specifically the Data Guard Management component, so instances using Data Guard management functionality are the relevant attack surface. No user interaction is required (UI:N) and attack complexity is low (AC:L). The primary limiting factors are the authentication requirement (any low-privilege credential or foothold) and reachability of the OEM HTTP interface; the risk is highest where OEM is broadly accessible or internet-exposed. The confirmed scope change (S:C) means a successful attack can propagate impact to the managed Oracle Database estate and additional products beyond OEM itself.

Impact

This is a genuine high-priority vulnerability, not a high-CVSS-but-low-real-risk case. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H, base 9.9) is internally consistent with the description: network-reachable over HTTP, low attack complexity, only a low-privilege account required, no user interaction, and a scope change that Oracle explicitly confirms ('attacks may significantly impact additional products'). The combination of a scope change with full C/I/A impact and complete 'takeover' of Oracle Enterprise Manager for Oracle Database is why the score sits at 9.9 rather than lower. Key exploitation signals are MISSING, however, and this must limit confidence: no EPSS probability was provided, the CVE is NOT in CISA KEV, and no public POC is referenced - the only source is the Oracle Critical Patch Update advisory. Therefore exploitation is characterized as 'no public exploit identified at time of analysis.' Note also a conflicting signal in the input metadata: the CVE is tagged 'Information Disclosure,' but Oracle's own impact ratings (C:H/I:H/A:H plus product takeover) describe far more than disclosure - the tag understates the true impact and should not be relied upon. The PR:L requirement (a valid low-privilege account on the management console) is the main real-world mitigating factor; against an internet-exposed or broadly-accessible OEM instance with any foothold, this is a strong candidate for prioritized patching in the October 2026 CPU cycle.

Exploit ScenarioDerived

An attacker holding any low-privileged account on an Oracle Enterprise Manager for Oracle Database console (13.5 or 24.1) sends crafted HTTP requests to the Data Guard Management component to escalate into a full takeover of OEM. Because of the confirmed scope change, the compromise extends beyond OEM itself to the managed Oracle Database estate and related products. No public exploit code is identified at time of analysis, but the low complexity and low privilege bar make exploitation straightforward once access is obtained.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Low-privileged console users can achieve full takeover of Oracle Enterprise Manager for Oracle Database 13.5 and 24.1 through the Data Guard Management component, with scope change extending impact to managed databases and additional products reachable from the management server. The issue is network-reachable over HTTP with low complexity and no user interaction, but it requires a valid low-privileged OEM account (PR:L), so it is not unauthenticated. No public exploit code or confirmed active exploitation was identified at time of analysis; the CVSS 3.1 base score is 9.9.

RemediationAI

Vendor remediation is referenced by the Oracle Critical Patch Update October 2026 advisory for Oracle Enterprise Manager for Oracle Database 13.5 and 24.1; the provided data does not include an exact fixed version or RU number, so confirm the target version from https://www.oracle.com/security-alerts/cpuoct2026.html before upgrading. Until patched, restrict network access to the OEM HTTP console to trusted administrative networks and VPNs, because broad exposure materially raises risk and this may disrupt remote administration. Remove or tightly limit low-privileged OEM accounts, especially those not required for Data Guard operations, and review Data Guard Management privileges, since this reduces the PR:L prerequisite but can affect operational roles. If Data Guard Management is not needed, disable or restrict access to that component, accepting loss of standby-management functionality from OEM. Monitor OEM and managed database logs for anomalous Data Guard configuration changes from low-privileged accounts.

Affected VersionsENISA

Oracle Enterprise Manager for Oracle Database 13.5
Oracle Enterprise Manager for Oracle Database 24.1

Affected Packages

euvd oracle_enterprise_manager_for_oracle_database 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 for Oracle Database is a management console for Oracle database estates, and Data Guard Management is the subsystem used to configure and monitor standby database replication. The advisory does not map a CWE, so the precise root-cause class is not specified; operationally, the flaw allows a low-privileged authenticated user to cross a trust boundary from the OEM console into the Data Guard management surface and achieve high confidentiality, integrity, and availability impact. The CVSS vector AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H confirms remote HTTP reachability, low complexity, no user interaction, and a scope change; the S:C component means impact is not confined to OEM itself and can extend to the managed Oracle Database estate and other products. No CPE strings were provided; EUVD identifies Oracle Enterprise Manager for Oracle Database 13.5 and 24.1 as affected.

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Severity by source

NVD PRIMARY 9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vuln.today AI 9.9 CRITICAL

Network HTTP vector (AV:N) with low complexity (AC:L) and a required low-privilege account (PR:L); full takeover with confirmed cross-product impact justifies S:C and C/I/A all High.

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

Primary rating from NVD.

CVSS VectorNVD

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

DescriptionNVD

Vulnerability in the Oracle Enterprise Manager for Oracle Database product of Oracle Enterprise Manager (component: Data Guard Management). Supported versions that are affected are 13.5 and 24.1. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Enterprise Manager for Oracle Database. While the vulnerability is in Oracle Enterprise Manager for Oracle Database, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Enterprise Manager for Oracle Database. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Enterprise Manager for Oracle Database 13.5 and 24.1 contains a critical vulnerability that could allow a low-privileged console user to take full control of the management server and extend impact to managed databases and other reachable products. Leadership should prioritize this because a compromised OEM account could expose sensitive database estates and disrupt critical operations, even though no public exploit has been identified at time of analysis.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting network access to the OEM management server and Data Guard Management component, enforcing least privilege and monitoring low-privileged accounts, enabling detailed logging, and segmenting the management server from managed databases.

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
Prevalence
Medium
common Oracle DB management console, deployed only in Oracle-centric enterprise shops
Data Quality
4 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 0.5%
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· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Very High

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +50
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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