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PatchSiren cyber security CVE debrief

CVE-2024-39870 Siemens CVE debrief

A privilege escalation vulnerability in Siemens SINEMA Remote Connect Server allows authenticated local users with user management privileges to modify accounts outside their authorized scope and escalate privileges. The issue stems from improper authorization checks when the application is configured to allow users to manage their own user accounts. Affected versions require update to V3.2 SP1 or later.

Vendor
Siemens
Product
SINEMA Remote Connect Server
CVSS
MEDIUM 6.3
CISA KEV
Not listed in stored evidence
Original CVE published
2024-07-09
Original CVE updated
2024-07-09
Advisory published
2024-07-09
Advisory updated
2024-07-09

Who should care

Organizations operating Siemens SINEMA Remote Connect Server for remote access to industrial control systems and operational technology environments. Security teams responsible for OT/ICS infrastructure, system administrators managing SINEMA deployments, and compliance officers tracking industrial cybersecurity vulnerabilities should prioritize assessment and patching.

Technical summary

Siemens SINEMA Remote Connect Server contains an improper authorization vulnerability in its user management functionality. When configured to allow users to manage their own accounts, the application fails to properly restrict scope, enabling authenticated local users with this privilege to modify user accounts outside their authorized domain and escalate their own privileges. The vulnerability has a CVSS 3.1 score of 6.3 (Medium) with network attack vector, low attack complexity, and low privileges required. Siemens has released version V3.2 SP1 to address this issue.

Defensive priority

medium

Recommended defensive actions

  • Update Siemens SINEMA Remote Connect Server to V3.2 SP1 or later version
  • Review and restrict user management privileges to only necessary administrative accounts
  • Audit existing user accounts for unauthorized modifications or privilege escalations
  • Implement principle of least privilege for all user management configurations
  • Monitor for anomalous user account modifications in SINEMA Remote Connect Server environments

Evidence notes

CISA ICS advisory ICSA-24-193-01 published 2024-07-09 documents this vulnerability in Siemens SINEMA Remote Connect Server. Siemens ProductCERT advisory SSA-381581 provides vendor confirmation and remediation guidance. CVSS 6.3 (Medium) reflects network attack vector with low attack complexity and low privileges required.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-39870 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-39870

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

  • CVE-2024-39870 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-39870

    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/2024/icsa-24-193-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-381581.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-381581.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/pdf/ssa-381581.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/txt/ssa-381581.txt

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-193-01

    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

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.