CVE-2026-33615Network attack vector

Unauthenticated user-table writes via setinfo SQL injection

Published Apr 2, 2026 · Updated Apr 2, 2026

SQL injection in MB connect line mbCONNECT24 and mymbCONNECT24 2.19.4 and earlier allows remote attackers to write user-table data. The unauthenticated setinfo endpoint incorporates attacker-controlled elements into an SQL UPDATE command without neutralizing SQL syntax. Network access to the endpoint is sufficient to alter the user table and interrupt service; no database reads are reported.

CVSS severity9.1
Critical
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in MB connect line mbCONNECT24 and mymbCONNECT24 2.19.4 and earlier allows remote attackers to write user-table data. The unauthenticated setinfo endpoint incorporates attacker-controlled elements into an SQL UPDATE command without neutralizing SQL syntax. Network access to the endpoint is sufficient to alter the user table and interrupt service; no database reads are reported.

The record

CVE
CVE-2026-33615
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
MB connect line
Product
mbCONNECT24
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <=2.19.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MB connect line · mbCONNECT24version=0.0.0 <=2.19.4
MB connect line · mymbCONNECT24version=0.0.0 <=2.19.4

Published CVSS scores

9.1CERT VDECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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