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Oracle Enterprise Manager CVE-2026-101526

| EUVDEUVD-2026-105938 HIGH
2026-10-20 secalert_us@oracle.com GHSA-4wpg-qjhq-v8gh
8.8
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-privileged account
  2. Exploit
    Send crafted HTTP request to Configuration Management
  3. Execution
    Exploit easily-exploitable flaw
  4. Impact
    Take over Oracle EM for Siebel (C/I/A)

Vulnerability Assessment

Exploitation Conditions

Requires a valid low-privileged account on the target Oracle Enterprise Manager for Siebel instance (PR:L confirmed in vector) with network HTTP access to the Configuration Management component. No user interaction is needed (UI:N) and attack complexity is low (AC:L). Exploitation is limited to affected versions 13.5 and 24.1 and to attackers who already possess authenticated access - this credential requirement is the primary factor limiting exploitation despite the network-reachable, low-complexity nature of the flaw. The description does not identify a specific non-default configuration setting beyond the affected component being present.

Impact

This is a genuinely high-priority vulnerability on paper, but current signals suggest it is not yet an active emergency. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 8.8) describes a low-complexity, network-reachable flaw requiring only low-level privileges and no user interaction, yielding full compromise (confidentiality, integrity, and availability all High) - Oracle itself characterizes it as 'easily exploitable' resulting in product takeover. However, several key exploitation signals are MISSING from the input: there is no EPSS score provided, no CISA KEV listing, and no public POC referenced, so real-world exploitation likelihood cannot be quantified from the data. No public exploit identified at time of analysis. The only source is the Oracle October 2026 Critical Patch Update advisory, meaning this is a vendor-disclosed, patch-concurrent flaw rather than one observed under active attack. The authentication requirement is confirmed by the vector (PR:L = authenticated low-privileged attacker), which materially limits the attacker population to those who already hold valid credentials, tempering the otherwise severe impact. Net: treat as a high-priority patch within Oracle EM for Siebel environments, but note there is no evidence of widespread or active exploitation at this time.

Exploit ScenarioDerived

An attacker who already holds a low-privileged account on an Oracle Enterprise Manager for Siebel instance sends crafted HTTP requests to the Configuration Management component over the network. Because the flaw is low-complexity and requires no user interaction, the attacker escalates to full control of the Oracle Enterprise Manager for Siebel product, compromising monitored configuration data and management functions. No public exploit code has been identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Authenticated compromise of Oracle Enterprise Manager for Siebel 13.5 and 24.1 can escalate to full takeover through the Configuration Management component, with a low-privileged network attacker able to affect confidentiality, integrity, and availability at CVSS 8.8. The flaw requires only a valid low-privileged account and HTTP access, not user interaction, so exposure is significant wherever such accounts exist; however, no public exploit identified at time of analysis and no CISA KEV confirmation is present, so this is not assessed as an active emergency.

RemediationAI

Apply the fix from Oracle's October 2026 Critical Patch Update advisory at https://www.oracle.com/security-alerts/cpuoct2026.html; the provided data does not specify an exact patched build, so the advisory should be used to identify and verify the correct 13.5 or 24.1 update level. Until patching is complete, reduce exposure by restricting HTTP access to the Configuration Management component to trusted management networks and required administrators, accepting that this can disrupt legitimate remote administration and integrations; additionally, remove or disable unnecessary low-privileged accounts and review logs for unusual configuration-management activity, though account hygiene is only a compensating control and does not fix the underlying flaw. Authentication is mandatory for exploitation, so eliminating unnecessary accounts and enforcing least privilege directly reduces attack surface.

Affected VersionsENISA

Oracle Enterprise Manager for Siebel 13.5
Oracle Enterprise Manager for Siebel 24.1

Affected Packages

euvd oracle_enterprise_manager_for_siebel 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 Siebel is the management and monitoring integration used to oversee Siebel CRM environments, and the Configuration Management component is the HTTP-reachable surface that handles configuration data and managed targets. The CVSS vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H describes a network-reachable, low-complexity flaw that requires a valid low-privileged account and no user interaction; because scope is unchanged but all three impact metrics are high, exploitation stays within the Enterprise Manager/Siebel trust boundary while giving the attacker broad control over that product. CWE is not provided, and Oracle does not disclose the precise root-cause class in the description. The practical constraint is the authenticated foothold rather than a non-default configuration, and affected releases are 13.5 and 24.1. Although the source tags include Information Disclosure, the assessed CVSS impact is full confidentiality, integrity, and availability loss, so this should be treated as a takeover-class issue rather than a read-only disclosure.

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Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Network HTTP vector (AV:N), low complexity per vendor 'easily exploitable' (AC:L), authenticated low-privilege attacker (PR:L), no interaction (UI:N), and full takeover gives C/I/A:H.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/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:N/SI:N/SA:N

Primary rating from NVD.

CVSS VectorNVD

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

DescriptionNVD

Vulnerability in the Oracle Enterprise Manager for Siebel product of Oracle Enterprise Manager (component: Configuration 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 Siebel. Successful attacks of this vulnerability can result in takeover of Oracle Enterprise Manager for Siebel. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Enterprise Manager for Siebel 13.5 and 24.1 contains a high-severity flaw in its Configuration Management component that could let a low-privileged user escalate to full control of the management platform, putting Siebel configuration data and operations at risk. Leadership should prioritize exposure reduction because any environment with low-privileged accounts and network access to the component may be affected, though no public exploit identified at time of analysis and no CISA KEV confirmation indicates an active emergency.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting network access to the Configuration Management component, minimizing and monitoring low-privileged accounts, enabling detailed logging and alerting for privilege-escalation activity, and engaging Oracle support for mitigation guidance.

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
Prevalence
Medium
Oracle EM plugin specific to Siebel; limited to Oracle 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 HIGH
CISA KEV No
Public POC No
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
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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