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CVE-2024-52285 Siemens CVE debrief

CVE-2024-52285 affects Siemens SiPass integrated AC5102 (ACC-G2) and ACC-AP. The advisory says several MQTT URLs are exposed without authentication, which could let an unauthenticated remote attacker access sensitive data. Siemens lists a fix in V6.4.8 or later; the issue is rated CVSS 5.3 (MEDIUM).

Vendor
Siemens
Product
SiPass integrated AC5102 (ACC-G2)
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2025-03-11
Original CVE updated
2025-05-06
Advisory published
2025-03-11
Advisory updated
2025-05-06

Who should care

Security, operations, and asset-management teams responsible for Siemens SiPass integrated AC5102 (ACC-G2) or ACC-AP deployments, especially in environments where these devices are reachable from untrusted networks.

Technical summary

According to the CISA/Siemens advisory, affected devices expose several MQTT URLs without authentication. The impact described is limited to confidentiality: an unauthenticated remote attacker could access sensitive data. The supplied CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, which corresponds to a 5.3 MEDIUM score.

Defensive priority

Medium priority, but treat as urgent if the devices are network-reachable beyond a tightly controlled management segment. Because the issue requires no authentication and no user interaction, exposed deployments should be patched and access-restricted promptly.

Recommended defensive actions

  • Update affected Siemens SiPass integrated systems to V6.4.8 or later.
  • Confirm whether AC5102 (ACC-G2) and ACC-AP devices are present in the environment and identify any exposed management or MQTT-facing network paths.
  • Restrict network access to these devices so only trusted administrative systems can reach them.
  • Review logs and access controls for unexpected connections to MQTT-related services on affected devices.
  • Use CISA and vendor advisory references to validate remediation status and deployment scope.

Evidence notes

All statements above are derived from the supplied CISA CSAF advisory and its referenced Siemens advisory. The issue description explicitly states that affected devices expose several MQTT URLs without authentication and that this could allow an unauthenticated remote attacker to access sensitive data. The remediation field specifies V6.4.8 or later. The revision history indicates the advisory was published on 2025-03-11 and later revised on 2025-05-06 for typo fixes only.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-52285 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-52285

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

  • CVE-2024-52285 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-52285

    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-25-072-04.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-515903.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-515903.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-072-04

    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.