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CVE-2024-56841 Siemens CVE debrief

CVE-2024-56841 is a high-severity LDAP injection vulnerability in Siemens Mendix LDAP that allows unauthenticated remote attackers to bypass username verification. Published January 14, 2025, this vulnerability affects the Mendix LDAP module and was disclosed through coordinated CISA and Siemens advisories. The CVSS 3.1 score of 7.4 reflects network attack vector, high attack complexity, no privileges required, no user interaction, and high impact to confidentiality and integrity. Siemens has released version 1.1.2 to address this vulnerability. Organizations using affected versions should prioritize patching given the unauthenticated remote exploitation potential and the critical nature of authentication bypass in LDAP-integrated systems.

Vendor
Siemens
Product
Mendix LDAP
CVSS
HIGH 7.4
CISA KEV
Not listed in stored evidence
Original CVE published
2025-01-14
Original CVE updated
2025-05-06
Advisory published
2025-01-14
Advisory updated
2025-05-06

Who should care

Organizations operating Siemens Mendix applications with LDAP integration for authentication, particularly those in industrial and operational technology environments. Security teams responsible for identity and access management infrastructure. OT security practitioners following CISA ICS advisories. Mendix platform administrators and developers maintaining LDAP authentication modules.

Technical summary

The Mendix LDAP module contains an LDAP injection vulnerability where insufficient input sanitization allows attackers to manipulate LDAP queries. An unauthenticated remote attacker can craft malicious input to bypass username verification mechanisms. The vulnerability requires network access but no authentication or user interaction. Attack complexity is rated high, likely due to required knowledge of LDAP query structure and target environment. Successful exploitation yields high impact to confidentiality and integrity of authentication decisions, though availability is not affected. The fix in version 1.1.2 implements proper input validation and parameterized LDAP queries to prevent injection attacks.

Defensive priority

high

Recommended defensive actions

  • Update Siemens Mendix LDAP module to version 1.1.2 or later as specified in vendor advisory
  • Review LDAP integration configurations for additional input validation layers
  • Monitor authentication logs for anomalous username verification patterns
  • Apply defense-in-depth controls per CISA ICS recommended practices for industrial control systems
  • Validate patch deployment across all Mendix LDAP module instances in production environments

Evidence notes

Vulnerability confirmed through CISA CSAF advisory ICSA-25-016-01 with Siemens as the affected vendor. The advisory specifies LDAP injection as the root cause enabling username verification bypass. CVSS vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N sourced from official advisory. Remediation guidance explicitly states update to V1.1.2 or later. Advisory modified May 6, 2025 for typo corrections without substantive security content changes.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-56841 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-56841

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-56841 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-56841

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-016-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-314390.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-314390.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-016-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.