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JD Edwards EnterpriseOne EUVDEUVD-2026-106542

| CVE-2026-91288 HIGH
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-3rp7-647c-qqw8
7.4
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 JDENET service over network
  2. Exploit
    Send crafted JDENET request to Interoperability SEC
  3. Execution
    Satisfy complex trigger conditions
  4. Impact
    Gain unauthorized read/write to EnterpriseOne data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

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

Exploitation Conditions

Exploitation requires network access to the JDENET communication protocol/service of JD Edwards EnterpriseOne Tools, specifically reaching the Interoperability SEC component; no authentication or user interaction is needed (PR:N/UI:N). The primary limiting factor is high attack complexity (AC:H) - Oracle explicitly labels it 'Difficult to exploit,' implying the attacker must satisfy conditions beyond simply sending a request (e.g., timing, specific server state, or defeating a mitigating control). Realistic exposure is further limited to environments running affected versions 9.2.0.0 through 9.2.26.5 where the JDENET service is reachable by the attacker; JD Edwards servers are commonly deployed on internal networks rather than the public internet, which constrains the practical attack surface. Availability is unaffected (A:N).

Impact

This is a genuinely impactful but not top-tier-urgent vulnerability. The CVSS 3.1 score of 7.4 is driven by high Confidentiality and Integrity impact (C:H/I:H) combined with network reach (AV:N) and no authentication requirement (PR:N), but it is tempered by high attack complexity (AC:H), which is why it does not score higher. The AC:H is significant: Oracle's language 'Difficult to exploit' typically means the attacker must win a race condition, defeat a non-trivial protection, or satisfy conditions outside their direct control, materially lowering real-world exploitability. No EPSS score, CISA KEV listing, or public POC is present in the provided data - so there is no public exploit identified at time of analysis, and no evidence of active exploitation. No SSVC decision data was supplied. Net: a credible threat to data confidentiality and integrity in exposed JD Edwards environments, but the AC:H barrier and absence of exploitation signals place it below internet-facing, low-complexity, unauthenticated RCE bugs in priority. CWE is listed as N/A and no independent advisory beyond the Oracle CPU bundle is available, so the precise flaw mechanism is unconfirmed.

Exploit ScenarioDerived

An attacker with network reach to the JDENET service port of an exposed JD Edwards EnterpriseOne Tools server sends specially crafted requests to the Interoperability SEC component without any credentials, exploiting a difficult-to-trigger flaw to read or tamper with critical ERP data. Because attack complexity is high, success likely requires precise timing or specific runtime conditions rather than a simple single-shot request. No public exploit code is known to exist at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 20, 2026

JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.5 exposes an Interoperability SEC weakness over JDENET that can let unauthenticated network attackers read and alter critical application data. Oracle describes exploitation as difficult, with high attack complexity as the main barrier, and no public exploit identified at time of analysis or confirmed active exploitation (CISA KEV). Availability is not affected, but confidentiality and integrity impacts are high.

RemediationAI

Apply the Oracle Critical Patch Update October 2026 fix for JD Edwards EnterpriseOne Tools; the provided data identifies affected versions 9.2.0.0 through 9.2.26.5 but does not state an exact patched version, so confirm the fixed release in the advisory at https://www.oracle.com/security-alerts/cpuoct2026.html. If patching cannot be completed promptly, restrict network access to the JDENET service by allowing only trusted EnterpriseOne tiers and integration hosts through firewall or security-group rules and by segmenting JD Edwards servers from untrusted networks, recognizing that this can break legitimate interoperability integrations. Monitor JDENET traffic and Interoperability SEC logs for anomalous unauthenticated access or data changes, noting that detection is constrained because the vulnerability is described as difficult to exploit and no public exploit details are available.

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

The flaw sits in Oracle JD Edwards EnterpriseOne Tools' Interoperability SEC component, which governs security for interoperability traffic carried over JDENET, Oracle's proprietary network protocol used between EnterpriseOne tiers and integration clients. The provided data does not assign a CWE, so the precise root cause is unspecified; the Authentication Bypass tag and PR:N/UI:N vector indicate that an attacker who can reach the JDENET service may bypass expected authentication or authorization checks. AC:H reflects conditions beyond a simple request, such as specific server state, timing, or defeating a mitigating control, which Oracle characterizes as difficult to exploit. Successful exploitation yields high confidentiality and integrity impact (C:H/I:H) with no availability impact (A:N).

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Severity by source

Vendor (oracle) PRIMARY 7.4 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
vuln.today AI 7.4 HIGH

Network-reachable via JDENET and unauthenticated (AV:N/PR:N), but vendor-confirmed 'difficult to exploit' justifies AC:H; data read and tamper give C:H/I:H with no availability impact (A:N).

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:H/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
High
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: Interoperability SEC). Supported versions that are affected are 9.2.0.0-9.2.26.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via JDENET 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 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

Oracle JD Edwards EnterpriseOne Tools versions 9.2.0.0 through 9.2.26.5 contain a high-severity Interoperability SEC flaw exposed over JDENET that could allow network attackers to read and alter critical application data, putting finance, supply chain, and operational records at risk. Although Oracle rates exploitation as difficult and no public exploit or confirmed active exploitation has been identified, the absence of a vendor patch means affected organizations must depend on network controls and monitoring until a fix is released. Leadership should prioritize locating exposed JDENET endpoints because confidentiality and integrity of core ERP data-not availability-are the primary exposure.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Restrict JDENET network exposure through segmentation and firewall allowlists, monitor and log interoperability traffic, enforce least privilege on service accounts, and apply Oracle interim guidance.

Threat Intelligence Overview

EPSS Score
0.3%
Top 84% exploitable
Prevalence
Medium
enterprise ERP suite, widely used but niche vs ubiquitous infrastructure
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 0.3%
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

37
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +37
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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