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EnterpriseOne Tools EUVDEUVD-2026-106519

| CVE-2026-91265 CRITICAL
Improper Authentication (CWE-287)
2026-10-20 secalert_us@oracle.com GHSA-3g2q-v7mw-hfh8
9.1
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
    Reach HTTP endpoint over network
  2. Delivery
    Send crafted unauthenticated request
  3. Exploit
    Bypass authentication in Enterprise Infrastructure
  4. Execution
    Read/modify critical EnterpriseOne data
  5. Impact
    Exfiltrate or tamper with ERP records

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 beyond network reachability - the vector is AV:N/AC:L/PR:N/UI:N, meaning any attacker who can send HTTP requests to a JD Edwards EnterpriseOne Tools instance (Enterprise Infrastructure SEC component, versions 9.2.0.0 through 9.2.26.5) can exploit it without credentials or user interaction. The practical limiting factors are therefore network exposure (the instance must be reachable by the attacker, e.g. internet-facing or on a reachable internal segment) and running an affected 9.2.x version; there is no stated non-default configuration, feature toggle, or platform requirement. Availability is not impacted (A:N), so exploitation targets data confidentiality and integrity rather than service disruption.

Impact

This is a genuine high-priority vulnerability, not an inflated-score artifact. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes the easiest-to-exploit profile: network-reachable over HTTP, low attack complexity, no privileges, and no user interaction, yielding a 9.1 base score driven by High confidentiality and integrity impact (availability is unaffected, A:N). Oracle's own description reinforces this with 'easily exploitable' and 'unauthenticated attacker.' The limiting signals are the softer threat-intelligence indicators: no EPSS exploitation-probability score is provided, the vulnerability is not listed in CISA KEV, and no public proof-of-concept is referenced - so there is no public exploit identified at time of analysis. The 'Authentication Bypass' tag is consistent with the PR:N vector but the description does not technically characterize the flaw (CWE is N/A), so the exact mechanism is unconfirmed. Net: treat as a high priority for any internet- or intranet-exposed JD Edwards EnterpriseOne Tools instance because exploitation prerequisites are minimal, while noting that active exploitation is not currently evidenced - prioritize patching but the urgency is driven by exploitability, not confirmed in-the-wild activity.

Exploit ScenarioDerived

An attacker with network access sends crafted HTTP requests to an exposed JD Edwards EnterpriseOne Tools instance (versions 9.2.0.0 through 9.2.26.5) and, without any credentials or user interaction, gains unauthorized read and write access to business-critical ERP data. Given the low attack complexity (AC:L) and no authentication requirement, a single reachable endpoint is sufficient; no public exploit code is currently identified, but the vector makes reliable exploitation straightforward once the technical flaw is understood.

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

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AnalysisAIv1 – Oct 20, 2026

Unauthenticated HTTP access to JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.5 can allow a remote attacker to read and alter critical application data, with CVSS 9.1 reflecting high confidentiality and integrity impact but no availability impact. The flaw is in the Enterprise Infrastructure SEC component and is rated PR:N/AC:L/UI:N, so the main practical barrier is network reachability to an affected instance; no public exploit was identified at time of analysis and no CISA KEV confirmation was provided. Oracle's October 2026 Critical Patch Update is the reference advisory for remediation.

RemediationAI

Apply the JD Edwards EnterpriseOne Tools fix from Oracle's October 2026 Critical Patch Update (https://www.oracle.com/security-alerts/cpuoct2026.html); the provided data does not specify an exact patched Tools build, so confirm the minimum fixed 9.2.x release with Oracle Support before closing the finding. Until the patch is applied, reduce exposure by restricting HTTP access to the Enterprise Infrastructure SEC component to trusted networks, VPN users, or a reverse proxy with allowlists, since the vulnerability is network-reachable without authentication; this may interrupt legitimate remote-user and integration traffic, so scope exceptions carefully. Add WAF or HTTP monitoring for anomalous data-access and modification attempts as a detective control, recognizing that logging does not remove the need to patch.

Affected VersionsENISA

JD Edwards EnterpriseOne Tools 9.2.0.0 ≤9.2.26.5

Affected Packages

euvd jd_edwards_enterpriseone_tools 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 JD Edwards EnterpriseOne is an ERP platform, and the Tools layer provides runtime and infrastructure services used by the application. The affected Enterprise Infrastructure SEC component is part of that foundation, and the supplied tag 'Authentication Bypass' plus the CVSS vector AV:N/AC:L/PR:N/UI:N indicate an HTTP-reachable weakness that can be exercised without credentials or user interaction. The C:H/I:H/A:N vector means the attacker can read and modify critical data but cannot directly disrupt availability. No CWE was assigned in the provided data, so the precise root-cause class cannot be tied to a specific weakness category; the observable security failure is that an unauthenticated network user can reach functionality that should require authorization. Affected deployments are JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.5.

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Severity by source

Vendor (oracle) PRIMARY 9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
vuln.today AI 9.1 CRITICAL

Description confirms unauthenticated HTTP exploitation (AV:N/PR:N/UI:N) that is 'easily exploitable' (AC:L), with full read/write to critical data (C:H/I:H) and no availability impact (A:N).

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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
None

DescriptionCVE.org

Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Enterprise Infrastructure SEC). Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise JD Edwards EnterpriseOne Tools. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all JD Edwards EnterpriseOne Tools accessible data as well as unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

JD Edwards EnterpriseOne Tools versions 9.2.0.0 through 9.2.26.5 contain a critical unauthenticated flaw in the Enterprise Infrastructure SEC component that could allow a remote attacker to read and alter critical application data. No vendor-released patch identified at time of analysis, and no public exploit identified at time of analysis, so leadership should prioritize reducing network reachability to affected instances until the Oracle October 2026 Critical Patch Update is available. Organizations running these versions are exposed wherever the component is reachable, making ERP data confidentiality and integrity the primary business concern.

Business Impact: High
Compensating Controls

Restrict network access to JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.5 instances, especially the Enterprise Infrastructure SEC component, via firewall rules, VPN/allowlisting, and segmentation; block direct internet exposure; enforce least privilege and monitor HTTP logs for unauthorized read or alteration attempts; deploy WAF or reverse-proxy filtering where applicable; and apply the Oracle October 2026 Critical Patch Update as soon as it is released.

Threat Intelligence Overview

EPSS Score
0.4%
Top 67% exploitable
Prevalence
Medium
major Oracle ERP suite, common in large enterprises but vendor-specific
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· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +46
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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