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Agile PLM MCAD EUVDEUVD-2026-62016

| CVE-2026-71071 MEDIUM
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-2g29-39pp-cvcc
4.6
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
    Gain presence on adjacent network segment
  2. Delivery
    Authenticate with low-privileged CAX Client credentials
  3. Exploit
    Send crafted data requests to CAX Client component
  4. Execution
    Bypass authorization enforcement
  5. Impact
    Read restricted PLM design records or modify component 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: (1) physical or logical adjacency to the network segment where the Oracle Agile PLM MCAD Connector 3.6 executes - the attacker must be on the same LAN, VLAN, or broadcast domain as the connector host, ruling out internet-based attackers; (2) a low-privileged account on or authenticated to the MCAD Connector (PR:L per CVSS vector) - unauthenticated exploitation is not indicated by the available data. What limits exploitation: the adjacent-network constraint excludes remote attackers; the low-privilege requirement excludes fully unauthenticated attackers; availability is not impacted, so the vulnerability cannot be used for disruption; and affected data is described as 'some' and 'a subset,' implying partial rather than full data exposure. The 'Authentication Bypass' tag has not been independently corroborated with a CWE or detailed technical description - the exact bypass mechanism within the CAX Client is unconfirmed from available data.

Impact

The CVSS 3.1 base score of 4.6 (Medium) accurately reflects the constrained real-world risk. The adjacent attack vector (AV:A) is a significant limiting factor - exploitation requires physical or logical presence on the same network segment as the connector host, which substantially narrows the attacker population in typical enterprise deployments. PR:L further constrains exploitation to accounts that have already obtained some level of access to the system. Impacts are bounded: confidentiality (C:L) and integrity (I:L) are partial, and availability is unaffected (A:N), meaning this vulnerability cannot cause outages or denial-of-service. No EPSS data was provided, and the vulnerability is not listed in CISA KEV, suggesting no confirmed widespread exploitation. The 'Authentication Bypass' tag creates a minor tension with PR:L - if exploitation truly bypasses authentication, PR:N would be expected; the most consistent interpretation is that the bypass is an authorization bypass (privilege escalation within an authenticated session) rather than a full authentication bypass. This distinction should be verified with the Oracle advisory. Overall, this is a genuine but low-priority finding outside of high-value PLM environments handling sensitive design intellectual property.

Exploit ScenarioDerived

An attacker with a low-privileged account on the internal engineering VLAN - such as a contractor or insider with limited system access - connects to the CAX Client component over the adjacent network segment and issues crafted data requests that bypass authorization controls. The attacker reads design data or bill-of-materials records they are not entitled to access and makes unauthorized modifications to PLM records, potentially tampering with component specifications. No public exploit code has been identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 19, 2026

Partial authentication bypass in Oracle Agile PLM MCAD Connector 3.6 exposes confidentiality and integrity of accessible PLM data to low-privileged adjacent-network attackers. The CAX Client component fails to properly restrict data operations, allowing an attacker on the same physical network segment with low-level credentials to read a subset of accessible records and perform unauthorized insert, update, or delete operations. No public exploit has been identified at time of analysis, and active exploitation has not been confirmed by CISA KEV.

RemediationAI

Apply the patch issued as part of Oracle's Critical Security Patch Update (CSPU) for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html. An exact patched version number was not disclosed in the available intelligence data - consult the Oracle advisory directly for the specific build to deploy. As a compensating control where patching is not immediately possible, restrict network access to the MCAD Connector host using VLAN segmentation or firewall rules to limit adjacency to trusted engineering workstations only, reducing the pool of potential attackers. Additionally, enforce the principle of least privilege on CAX Client accounts, removing any accounts whose low-privilege access is not operationally required. Note that network segmentation does not eliminate the vulnerability but substantially raises the bar for exploitation. Monitor Oracle's advisory for confirmation of an exact patch version.

Affected VersionsENISA

Oracle Agile PLM MCAD Connector 3.6

Affected Packages

euvd oracle_agile_plm_mcad_connector 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 Agile PLM (Product Lifecycle Management) MCAD Connector is a supply-chain integration layer that bridges mechanical CAD tools with Oracle's Agile PLM platform. The CAX Client component handles communication between CAD applications and the PLM backend over an adjacent network segment. The CVSS vector specifies AV:A (adjacent attack vector), indicating the flaw is reachable only from the physical or logical network segment where the connector executes - consistent with a local LAN or VLAN-bounded deployment typical of industrial and manufacturing environments. No CWE is assigned in NVD, but the tag 'Authentication Bypass' from the intelligence data suggests the root cause involves insufficient authorization enforcement within the CAX Client, permitting low-privileged users to exceed their intended data access scope. This is consistent with broken access control patterns (CWE-284 family) rather than full authentication circumvention, given that PR:L is set.

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Severity by source

Vendor (oracle) PRIMARY 4.6 MEDIUM
AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
vuln.today AI 4.6 MEDIUM

Adjacent vector and low privileges align with description; no availability impact confirmed; partial C/I reflects bounded data exposure.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle Agile PLM MCAD Connector product of Oracle Supply Chain (component: CAX Client). The supported version that is affected is 3.6. Easily exploitable vulnerability allows low privileged attacker with access to the physical communication segment attached to the hardware where the Oracle Agile PLM MCAD Connector executes to compromise Oracle Agile PLM MCAD Connector. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Agile PLM MCAD Connector accessible data as well as unauthorized read access to a subset of Oracle Agile PLM MCAD Connector accessible data. CVSS 3.1 Base Score 4.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% exploitable
Prevalence
Low
specialized Oracle PLM integration component for CAD workflows
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Controlled
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +23
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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