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PatchSiren cyber security CVE debrief

CVE-2024-1305 Siemens CVE debrief

CVE-2024-1305 is a critical memory corruption issue affecting Siemens SINEMA Remote Connect Client. The supplied advisory describes an overflow in the tap-windows6 driver caused by improper size checking on incoming write operations, which can trigger a bug check and may allow arbitrary code execution in kernel space. Because the CVSS vector is network-reachable, requires no privileges, and needs no user interaction, this issue should be treated as urgent wherever the affected client is deployed. Siemens’ published remediation is to update to V3.2 SP3 or later.

Vendor
Siemens
Product
SINEMA Remote Connect Client
CVSS
CRITICAL 9.8
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

Organizations using Siemens SINEMA Remote Connect Client, especially OT/ICS administrators, Windows endpoint teams, and asset owners responsible for remote access tooling in industrial environments.

Technical summary

The CISA CSAF advisory for ICSA-25-072-10 identifies one affected product: Siemens SINEMA Remote Connect Client. The vulnerability description states that tap-windows6 driver version 9.26 and earlier does not properly validate the size of incoming write operations. That can overflow memory buffers, causing a system bug check and potentially enabling arbitrary code execution in kernel space. The supplied CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, consistent with a remotely reachable, unauthenticated, high-impact flaw. The advisory’s remediation is to update to V3.2 SP3 or later.

Defensive priority

Immediate. This is a critical, unauthenticated, network-reachable kernel-space memory corruption issue with potential code execution impact.

Recommended defensive actions

  • Inventory all deployments of Siemens SINEMA Remote Connect Client and confirm whether any affected versions or bundled driver components are present.
  • Apply Siemens’ remediation and update to V3.2 SP3 or later as soon as feasible.
  • Treat exposed remote-access endpoints and OT-adjacent Windows systems as highest priority for validation and patching.
  • If immediate patching is not possible, reduce exposure by limiting network access to the client and monitoring for crashes or unexpected kernel instability.
  • Track vendor and CISA advisories for any follow-up guidance or version clarifications.

Evidence notes

All facts in this debrief come from the supplied CISA CSAF source item and its referenced Siemens advisory. The source states: vendor Siemens; product Siemens SINEMA Remote Connect Client; CVE-2024-1305; publication and modification date 2025-03-11; CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; and remediation to update to V3.2 SP3 or later. The description specifically attributes the flaw to tap-windows6 driver version 9.26 and earlier and notes possible bug check and kernel-space code execution. No KEV entry was provided in the supplied enrichment.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-1305 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-1305

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

  • CVE-2024-1305 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-1305

    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.