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PatchSiren cyber security CVE debrief

CVE-2024-4877 Siemens CVE debrief

CVE-2024-4877 is a Siemens SINEMA Remote Connect Client issue publicly disclosed by CISA and Siemens on 2025-03-11. The advisory says an attacker with SeImeprsonatePrivilege who can create a named-pipe server using the same name as the "Interactive Service" may be able to impersonate the user running a connecting UI such as OpenVPN-GUI. Siemens' remediation is to update to V3.2 SP3 or later.

Vendor
Siemens
Product
SINEMA Remote Connect Client
CVSS
MEDIUM 4.9
CISA KEV
Not listed in stored evidence
Original CVE published
2025-03-11
Original CVE updated
2025-03-11
Advisory published
2025-03-11
Advisory updated
2025-03-11

Who should care

Administrators and operators responsible for Siemens SINEMA Remote Connect Client, especially in environments where the client UI connects through the Interactive Service. Security teams should also care because the issue can enable user impersonation if an attacker already has the required privilege.

Technical summary

The advisory describes a named-pipe server name collision scenario. If an attacker with SeImeprsonatePrivilege creates a pipe server matching the name used by the Interactive Service, a UI such as OpenVPN-GUI that connects to it could allow the attacker to impersonate the user running that UI. CISA’s source material assigns CVSS 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).

Defensive priority

Medium. The CVSS score is not high, but the impact includes user impersonation and the affected product is used in remote connectivity contexts. Patch planning should be prompt, especially where the client is deployed on operator workstations.

Recommended defensive actions

  • Update Siemens SINEMA Remote Connect Client to V3.2 SP3 or later.
  • Identify all hosts running the affected client and confirm version status before the next maintenance window.
  • Apply least-privilege controls on operator workstations and restrict unnecessary high-privilege local access.
  • Follow Siemens and CISA industrial control system defensive guidance for hardening and defense in depth.
  • Validate that only trusted administrative users can install, modify, or run privileged local services on affected endpoints.

Evidence notes

Primary evidence comes from CISA advisory ICSA-25-072-10, which cites Siemens advisory SSA-615740 for CVE-2024-4877. The source text explicitly states the named-pipe collision and user impersonation condition, and lists the remediation as V3.2 SP3 or later. The CVE and source publication dates supplied in the corpus are 2025-03-11.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-4877 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-4877

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

  • CVE-2024-4877 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-4877

    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-25-072-10.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-615740.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-615740.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-072-10

    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.