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Mb Connect Line Mbconnect24 CVE-2026-32969

| EUVDEUVD-2026-14407 HIGH
SQL Injection (CWE-89)
2026-03-23 CERTVDE GHSA-j3h2-gjm7-hpx9
7.5
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Send crafted SQL payload to userinfo endpoint
  2. Exploit
    Exploit blind SQL injection in authentication method
  3. Execution
    Exfiltrate sensitive data via time-based or error-based inference
  4. Impact
    Achieve complete confidentiality breach

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Persistence

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 against default configurations. Attacker sends crafted SQL injection payloads to the userinfo endpoint's authentication method without requiring credentials, victim interaction, or special feature enablement.

Impact

The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) indicates maximum exploitability with network-based attacks requiring low complexity and no privileges or user interaction, though impact is limited to confidentiality. The vulnerability is automatable and could be exploited at scale once details are public. While the 7.5 CVSS score is high, the current risk is moderated by the lack of public exploit code and absence from CISA KEV, suggesting no widespread active exploitation yet. However, the industrial control system context significantly elevates real-world risk because these platforms often provide gateway access to operational technology networks, and extracted credentials could enable lateral movement to critical industrial assets. The blind SQL injection nature may slow exploitation but does not prevent determined attackers from extracting complete databases through time-based or boolean-based techniques. Given the pre-authentication attack surface and the high-value targets (industrial remote access systems), this should be considered a high-priority patch target despite the absence of current exploitation indicators.

Exploit ScenarioDerived

An unauthenticated attacker on the internet identifies an exposed mbCONNECT24 portal and crafts malicious SQL payloads in requests to the userinfo endpoint's authentication method, using time-based blind SQL injection techniques to infer database structure and content byte-by-byte. Over several hours of automated queries, the attacker extracts the complete user database including hashed passwords, API keys, and configuration details for connected industrial devices. With this information, the attacker gains legitimate access credentials to industrial control systems managed through the platform, potentially affecting manufacturing operations or critical infrastructure.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 23, 2026

A pre-authentication blind SQL injection vulnerability exists in the userinfo endpoint's authentication method, allowing unauthenticated remote attackers to extract sensitive data from backend databases without any credentials. Affected products include MB Connect Line's mbCONNECT24 and mymbCONNECT24 industrial remote access solutions, as well as Helmholz's myREX24v2 and myREX24v2.virtual platforms used in industrial automation environments. With a CVSS score of 7.5 and complete loss of confidentiality, this represents a significant risk to industrial control systems, though no active exploitation (KEV) or public POC has been reported yet.

RemediationAI

Organizations should immediately consult CERT@VDE advisories VDE-2026-024 and VDE-2026-025 (available at https://certvde.com/de/advisories/VDE-2026-024 and https://certvde.com/de/advisories/VDE-2026-025) for specific patch versions and apply vendor-provided security updates from MB Connect Line and Helmholz as soon as they become available. Until patching is complete, implement network segmentation to restrict access to the affected userinfo endpoint to only trusted IP ranges using firewall rules or web application firewalls with SQL injection signature detection enabled. Deploy intrusion detection systems monitoring for SQL injection patterns targeting the authentication method, particularly looking for time delays, boolean-based payloads, or excessive authentication attempts. Consider temporarily disabling remote access through these platforms if business continuity allows, or enforce additional authentication layers such as VPN access before reaching the vulnerable endpoints.

Affected VersionsENISA

myREX24V2.virtual 0.0.0 ≤2.19.3
mymbCONNECT24 0.0.0 ≤2.19.3
MB connect line mbCONNECT24 0.0.0 ≤2.19.3
myREX24V2 0.0.0 ≤2.19.3

Affected Packages

euvd mb_connect_line_mbconnect24 no fix
euvd mymbconnect24 no fix
euvd myrex24v2 no fix
euvd myrex24v2_virtual no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability affects industrial remote access and maintenance platforms used in operational technology environments. The affected products include MB Connect Line mbCONNECT24 (cpe:2.3:a:mb_connect_line:mb_connect_line_mbconnect24), mymbCONNECT24 (cpe:2.3:a:mb_connect_line:mymbconnect24), and Helmholz myREX24v2 variants (cpe:2.3:a:helmholz:myrex24v2 and cpe:2.3:a:helmholz:myrex24v2.virtual). The root cause is CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), where user-supplied input in the userinfo endpoint is concatenated directly into SQL SELECT statements without proper sanitization or parameterized queries. The pre-authentication nature means the vulnerability exists before any authentication checks, making it accessible to completely unauthenticated attackers. These platforms typically manage remote connections to industrial equipment, making database contents potentially include credentials, configuration data, and sensitive industrial process information.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

An unauthenticated remote attacker can exploit a Pre-Auth blind SQL Injection vulnerability in the userinfo endpoint’s authentication method due to improper neutralization of special elements in a SQL SELECT command. This can result in a total loss of confidentiality.

Executive ViewAI

Why It Matters

A critical SQL injection vulnerability affecting MB Connect Line and Helmholz industrial remote access platforms allows unauthenticated attackers to extract sensitive database information without credentials. Organizations using mbCONNECT24, mymbCONNECT24, myREX24v2, or myREX24v2.virtual platforms face immediate risk of data breach and potential operational disruption in industrial environments.

Business Impact: High
Compensating Controls

Implement WAF rules targeting SQL injection signatures in userinfo endpoint requests; restrict network access to affected platforms using firewall rules and network segmentation; disable remote access features if operationally feasible; enable detailed authentication logging and SQL query monitoring; implement database access controls limiting data exposure; conduct regular security scanning of exposed endpoints; establish incident response procedures for potential data exfiltration.

Threat Intelligence Overview

EPSS Score
0.1%
Top 71% exploitable
Data Quality
6 sources
Confidence: High

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 0.1%
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

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