CVE-2024-56841Network attack vector

Unauthenticated verification bypass via LDAP injection

Published Jan 14, 2025 · Updated Jan 14, 2025

LDAP injection in Siemens Mendix LDAP before 1.1.2 allows remote attackers to bypass username verification through crafted login input. An LDAP authentication query fails to neutralize special elements in attacker-controlled username input; Siemens does not disclose the affected function. The LDAP authentication path must be enabled and reachable, and the published record does not specify what application access follows the bypass.

CVSS severity9.1
Critical
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP injection in Siemens Mendix LDAP before 1.1.2 allows remote attackers to bypass username verification through crafted login input. An LDAP authentication query fails to neutralize special elements in attacker-controlled username input; Siemens does not disclose the affected function. The LDAP authentication path must be enabled and reachable, and the published record does not specify what application access follows the bypass.

The record

CVE
CVE-2024-56841
Published
Jan 14, 2025
Updated
Jan 14, 2025
Vendor
Siemens
Product
Mendix LDAP
Classifications
CWE-90, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2025Record 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 <V1.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · Mendix LDAPversion=0 <V1.1.2

Published CVSS scores

9.1Siemens ProductCERTCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
7.4Siemens ProductCERTCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP 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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