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mbCONNECT24 CVE-2026-40836

| EUVD-2026-32135 HIGH
SQL Injection (CWE-89)
2026-05-27 info@cert.vde.com GHSA-9jg5-m477-mh8r
7.1
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
May 27, 2026 - 20:05 vuln.today

DescriptionNVD

An low privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the inmessage model due to improper neutralization of special elements in a SQL DELETE command allowing for reading the whole database and deleting entries in a non critical table. This can result in a total loss of confidentiality and some loss of integrity.

AnalysisAI

SQL injection in MB connect line's remote-maintenance platforms - mbCONNECT24, myREX24V2, myREX24V2.virtual and mymbCONNECT24 at versions up to and including 2.20.0 - lets a low-privileged remote attacker manipulate the SQL DELETE command in the 'inmessage' model to read the entire backend database and delete rows from a non-critical table. The flaw yields full confidentiality loss and partial integrity loss but no availability impact, and is rated CVSS 4.0 7.1. …

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RemediationAI

Within 24 hours: Inventory all MB connect line platform instances and identify systems running version 2.20.0 or earlier. Within 7 days: Implement network-level firewall restrictions on database access; enable SQL query audit logging for DELETE operations on the 'inmessage' model; conduct privilege audit and restrict user access to minimum necessary levels. …

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CVE-2026-40836 vulnerability details – vuln.today

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