CVE-2026-33617Network attack vector

Unauthenticated credential disclosure via exposed data24 configuration file

Published Apr 2, 2026 · Updated Apr 2, 2026

Information disclosure in MB connect line mbCONNECT24 and mymbCONNECT24 2.19.4 and earlier allows remote attackers to read database credentials. The data24 endpoint serves a configuration file containing those credentials without first requiring authentication. Network reachability is sufficient, but the credentials have no exposed endpoint through which they can be used, limiting the reported impact to confidentiality.

CVSS severity5.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in MB connect line mbCONNECT24 and mymbCONNECT24 2.19.4 and earlier allows remote attackers to read database credentials. The data24 endpoint serves a configuration file containing those credentials without first requiring authentication. Network reachability is sufficient, but the credentials have no exposed endpoint through which they can be used, limiting the reported impact to confidentiality.

The record

CVE
CVE-2026-33617
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
MB connect line
Product
mbCONNECT24
Classifications
CWE-497, T1552.001
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

5.3CERT@VDECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
T1552.001Unsecured Credentials: Credentials In Files

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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