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Oracle SOA Suite CVE-2026-91234

| EUVDEUVD-2026-106489 CRITICAL
Improper Authentication (CWE-287)
2026-10-20 secalert_us@oracle.com GHSA-fcvm-x3q2-xh87
9.8
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 internet-facing SOA Suite HTTP endpoint
  2. Delivery
    Send crafted request to Fabric Layer
  3. Exploit
    Trigger unauthenticated flaw
  4. Execution
    Execute attacker-controlled logic
  5. Impact
    Achieve full SOA Suite takeover

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

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

Exploitation Conditions

No special conditions - remote unauthenticated exploitation over HTTP against Oracle SOA Suite (Fabric Layer component), per CVSS AV:N/AC:L/PR:N/UI:N. The primary limiting factor is reachability: exploitation requires network access to the SOA Suite HTTP interface, so instances restricted to internal/segmented networks or behind authenticating proxies are materially harder to reach. Only the named supported versions (12.2.1.4.0 and 14.1.2.0.0) are stated as affected; other versions are not confirmed by the input.

Impact

This is a genuine high-priority vulnerability. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) describes the most dangerous possible profile for a base score: network-reachable over HTTP, low attack complexity, no privileges, and no user interaction, yielding full confidentiality, integrity, and availability compromise ('takeover of Oracle SOA Suite'). All signals point the same direction with no internal contradiction between the vector and the Oracle description. However, several real-world risk modifiers are MISSING from the input and must not be invented: no EPSS score was provided, the vulnerability is NOT listed in CISA KEV, and no public proof-of-concept is referenced - the only source is Oracle's October 2026 Critical Patch Update advisory. Therefore the extreme CVSS score reflects potential impact, not confirmed exploitation; there is no evidence of active exploitation or weaponization at this time. Also note the input Tags label this 'Information Disclosure,' which conflicts with the CVSS C:H/I:H/A:H and the 'takeover' language - this is a full-compromise RCE-class issue, not mere disclosure, so the tag understates the risk. Net: treat as a must-patch item on exposed/internet-facing SOA Suite instances given the trivial exploitability, while recognizing that widespread opportunistic exploitation is not yet demonstrated in the available data.

Exploit ScenarioDerived

An unauthenticated attacker with network access sends a crafted HTTP request to the exposed Fabric Layer component of an Oracle SOA Suite instance, requiring no credentials or user interaction. Because attack complexity is low, a single reliable request chain can lead to complete takeover of the SOA Suite server. No public exploit code is identified in the provided data, so an attacker would currently need to develop their own exploit.

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

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AnalysisAIv1 – Oct 20, 2026

Unauthenticated remote compromise of Oracle SOA Suite's Fabric Layer can lead to full takeover of the affected installation. The flaw affects SOA Suite 12.2.1.4.0 and 14.1.2.0.0 and is rated CVSS 9.8 with complete confidentiality, integrity, and availability impact; exploitation requires network access to the SOA Suite HTTP interface. No public exploit identified at time of analysis, and the main practical constraint is reachability rather than authentication or user interaction.

RemediationAI

Apply the Oracle Critical Patch Update fix referenced in the October 2026 advisory for SOA Suite 12.2.1.4.0 and 14.1.2.0.0; the provided data does not specify an exact patched version, so confirm the applicable patch level in the advisory at https://www.oracle.com/security-alerts/cpuoct2026.html. If immediate patching is not possible, reduce exposure by restricting network access to the SOA Suite HTTP interface, placing it behind an authenticating reverse proxy or WAF, and segmenting it away from untrusted networks; these controls may break legitimate integrations or client access and should be validated against business flows. Because exploitation requires reachability to the HTTP endpoint, firewall allow-listing and internal-only exposure are the most direct compensating measures until the vendor fix is deployed.

Affected VersionsENISA

Oracle SOA Suite 12.2.1.4.0
Oracle SOA Suite 14.1.2.0.0

Affected Packages

euvd oracle_soa_suite 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 SOA Suite is part of Oracle Fusion Middleware, and this issue is specifically in the Fabric Layer component. The supplied CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) indicates a remotely reachable, low-complexity attack that needs no credentials or user interaction and can fully compromise the service. No CWE mapping was provided, so the precise defect class-such as authentication bypass, unsafe deserialization, or injection-cannot be confirmed from the available data. The affected versions listed by Oracle and ENISA EUVD are 12.2.1.4.0 and 14.1.2.0.0; no CPE strings were supplied to narrow the affected packages further. The primary exposure factor is whether the SOA Suite HTTP interface is reachable from untrusted networks.

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Severity by source

Vendor (oracle) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Oracle describes easy unauthenticated HTTP exploitation causing full takeover, so AV:N/AC:L/PR:N/UI:N with C/I/A all High and unchanged scope.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle SOA Suite product of Oracle Fusion Middleware (component: Fabric Layer). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle SOA Suite. Successful attacks of this vulnerability can result in takeover of Oracle SOA Suite. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle SOA Suite versions 12.2.1.4.0 and 14.1.2.0.0 are exposed to a critical-severity Fabric Layer flaw that could result in complete compromise of the affected installation. Because SOA Suite often supports business-critical integration and process workflows, a successful attack could disrupt operations, expose sensitive data, and undermine customer trust. No vendor-released patch identified at time of analysis, and no public exploit identified at time of analysis, but leadership should prioritize reducing network exposure and tracking vendor remediation.

Business Impact: Severe
Compensating Controls

Restrict network access to the SOA Suite HTTP interface to trusted sources, segment affected Oracle SOA Suite 12.2.1.4.0 and 14.1.2.0.0 systems, monitor for anomalous activity, and engage Oracle for patch status and interim guidance; no vendor-released patch identified at time of analysis.

Threat Intelligence Overview

EPSS Score
0.5%
Top 59% exploitable
Prevalence
Medium
enterprise integration middleware, significant but not universal deployment footprint
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 0.5%
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
Yes
Human Impact
Very High

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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