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Mymbconnect24 CVE-2026-33614

| EUVDEUVD-2026-18174 HIGH
SQL Injection (CWE-89)
2026-04-02 CERTVDE
7.5
CVSS 3.1 · Vendor: CERTVDE
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Attack ChainAIDerived

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

  1. Access
    Send crafted SQL query to getinfo endpoint
  2. Exploit
    Bypass input validation in SELECT command
  3. Execution
    Extract sensitive database records
  4. Impact
    Exfiltrate confidential data

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 installations. The getinfo endpoint accepts unauthenticated requests and does not validate SQL input, allowing attackers to inject malicious SQL commands remotely without authentication or user interaction.

Impact

This represents a significant real-world risk due to the combination of unauthenticated access (PR:N), network accessibility (AV:N), low complexity (AC:L), and high confidentiality impact (C:H). The CVSS 7.5 score accurately reflects the severity, though the lack of integrity or availability impact moderates it from critical. Without EPSS data, KEV status, or confirmed POC availability in the provided intelligence, we cannot assess active exploitation likelihood. However, SQL injection vulnerabilities are well-understood by attackers, the technical barrier is low, and industrial IoT products like mbCONNECT24 often contain sensitive operational data, credentials, and configuration details. Organizations using these products for remote machine access should prioritize remediation, as the unauthenticated nature means any network-accessible instance is vulnerable. The disclosure by CERT@VDE through their CSAF advisory suggests coordinated disclosure, but the window between public disclosure and widespread exploitation attempts for such straightforward vulnerabilities is typically narrow.

Exploit ScenarioDerived

An attacker identifies an internet-exposed mbCONNECT24 instance through industrial IoT search engines like Shodan. Without requiring credentials, they craft malicious SQL payloads targeting the vulnerable getinfo endpoint, injecting UNION-based or boolean-based queries to enumerate database schema. Through iterative queries, the attacker extracts user credentials, industrial device configurations, VPN connection details, and potentially intellectual property stored in the connectivity platform's database. The low complexity and network accessibility mean automated scanning tools can identify and exploit vulnerable instances at scale, enabling mass data exfiltration campaigns against industrial organizations using these products.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 02, 2026

SQL injection in MB Connect Line's mbCONNECT24 and mymbCONNECT24 products allows unauthenticated remote attackers to extract sensitive data through the getinfo endpoint. The vulnerability permits direct database queries without authentication, enabling complete confidentiality breach of stored information. EPSS and KEV data not provided; exploitation status unknown beyond technical disclosure by CERT@VDE.

RemediationAI

Organizations should immediately consult the official MB Connect Line security advisory published by CERT@VDE at https://certvde.com/de/advisories/VDE-2026-030 and the corresponding CSAF document at https://mbconnectline.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-030.json for vendor-specific patching guidance and fixed versions. Patch availability per vendor advisory should be confirmed from these authoritative sources. Until patches can be applied, implement network segmentation to restrict access to the getinfo endpoint to trusted IP ranges only, deploy web application firewall rules to detect and block SQL injection patterns targeting this endpoint, and monitor database query logs for anomalous SELECT statements. Disable or remove the getinfo endpoint if it is not operationally required. Given the unauthenticated nature of the vulnerability, perimeter controls are critical interim mitigations.

Affected VersionsENISA

mbCONNECT24 0.0.0 ≤2.19.4
mymbCONNECT24 0.0.0 ≤2.19.4

Affected Packages

euvd mbconnect24 no fix
euvd mymbconnect24 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 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 stems from CWE-89 (SQL Injection) where the getinfo endpoint fails to properly sanitize or parameterize user-supplied input before incorporating it into SQL SELECT statements. The affected products are MB Connect Line's mbCONNECT24 (CPE 2.3:a:mb_connect_line:mbconnect24) and mymbCONNECT24 (CPE 2.3:a:mb_connect_line:mymbconnect24), which are industrial IoT connectivity solutions used for secure remote access to machines and systems. The lack of input validation allows attackers to inject arbitrary SQL commands, directly querying the backend database. The CVSS vector confirms this is a network-accessible vulnerability with low attack complexity requiring no user interaction, making it straightforward to exploit once the vulnerable endpoint is identified.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (CERTVDE) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from Vendor (CERTVDE) · only source for this CVE.

CVSS VectorVendor: CERTVDE

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 an unauthenticated SQL Injection vulnerability in the getinfo endpoint 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

CVE-2026-33614 is a critical SQL injection vulnerability in MB Connect Line's mbCONNECT24 and mymbCONNECT24 products that allows unauthenticated attackers to extract sensitive data directly from the database. This vulnerability exposes all confidential information stored in affected systems without requiring valid credentials, creating immediate risk to organizations deploying these products in production environments.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict network access to mbCONNECT24/mymbCONNECT24 systems via firewall rules limiting inbound connections to authorized IPs only; (2) Deploy web application firewall (WAF) rules to block SQL injection patterns targeting the getinfo endpoint; (3) Monitor database access logs for suspicious query patterns; (4) Segment affected systems on isolated network subnets; (5) Disable the getinfo endpoint if functionality is not critical to operations.

Threat Intelligence Overview

EPSS Score
0.0%
Top 85% exploitable
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 HIGH
CISA KEV No
Public POC No
EPSS 0.0%
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
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very 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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