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PatchSiren cyber security CVE debrief

CVE-2024-28882 Siemens CVE debrief

CVE-2024-28882 is a medium-severity issue published by CISA on 2025-03-11 for Siemens SINEMA Remote Connect Client. The advisory text states that OpenVPN versions 2.6.0 through 2.6.10, when used in a server role, can accept multiple exit notifications from authenticated clients and extend the validity of a closing session. Siemens lists an update to V3.2 SP3 or later as the remediation.

Vendor
Siemens
Product
SINEMA Remote Connect Server
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2024-11-12
Original CVE updated
2025-05-06
Advisory published
2024-11-12
Advisory updated
2025-05-06

Who should care

Administrators and security teams responsible for Siemens SINEMA Remote Connect Client deployments, and operators of OpenVPN server deployments running versions 2.6.0 through 2.6.10.

Technical summary

The supplied advisory describes a condition where an authenticated client can send multiple exit notifications to an OpenVPN server, causing a closing session to remain valid longer than intended. The supplied CVSS vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N) indicates network reachability, low attack complexity, required privileges, and a primary integrity impact.

Defensive priority

Medium

Recommended defensive actions

  • Update Siemens SINEMA Remote Connect Client to V3.2 SP3 or later, as specified in the advisory.
  • Inventory deployments to identify any OpenVPN 2.6.0 through 2.6.10 instances operating in a server role.
  • Prioritize remediation for remotely accessible systems and environments where authenticated client access is broadly available.
  • Review session-termination and access-control monitoring around VPN services for unexpected repeated exit notifications or abnormal session closure behavior.
  • Use the CISA ICS recommended practices referenced in the advisory to reinforce segmentation, access control, and defense-in-depth around remote connectivity services.

Evidence notes

All core facts are taken from the supplied CISA CSAF advisory and its referenced Siemens material: the affected product is Siemens SINEMA Remote Connect Client; the vulnerability description names OpenVPN 2.6.0 through 2.6.10 in server role; remediation is V3.2 SP3 or later; published and modified dates are 2025-03-11. The supplied enrichment does not include KEV listing information.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-28882 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-28882

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

  • CVE-2024-28882 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-28882

    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-25-072-02.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-073066.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-073066.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-072-02

    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.