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CVE-2025-31350 Siemens CVE debrief

CVE-2025-31350 is a high-severity SQL injection issue in Siemens TeleControl Server Basic. According to the CISA/Siemens advisory, an authenticated remote attacker who can reach port 8000 on a vulnerable system may bypass authorization controls, read and write the application's database, and execute code as NT AUTHORITY\NetworkService. Siemens and CISA published the advisory on 2025-04-16 and later revised it on 2025-05-06 for typo corrections.

Vendor
Siemens
Product
TeleControl Server Basic
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-04-16
Original CVE updated
2025-05-06
Advisory published
2025-04-16
Advisory updated
2025-05-06

Who should care

Organizations running Siemens TeleControl Server Basic, especially OT/ICS environments exposing port 8000 to non-trusted networks, should treat this as a priority patching and exposure-reduction item. Security teams responsible for network segmentation, access control, and system hardening around industrial applications should also review it.

Technical summary

The advisory describes a SQL injection condition in the internally used UpdateBufferingSettings method. The issue affects Siemens TeleControl Server Basic and requires attacker access to port 8000 on a system running a vulnerable version. The supplied CVSS vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, consistent with significant confidentiality, integrity, and availability impact once the prerequisite access is met. The vendor remediation is to update to V3.1.2.2 or later; Siemens also recommends restricting access to port 8000 to trusted IP addresses only.

Defensive priority

High

Recommended defensive actions

  • Update Siemens TeleControl Server Basic to V3.1.2.2 or later.
  • Restrict access to port 8000 on affected systems to trusted IP addresses only.
  • Review network exposure and apply ICS defense-in-depth guidance to reduce reachability of the service.

Evidence notes

This debrief is based on the CISA CSAF advisory ICSA-25-112-01 and the Siemens product security advisory referenced in the source corpus. The source text states that the affected application is vulnerable to SQL injection through UpdateBufferingSettings, that exploitation requires authenticated access and reachability of port 8000, and that the fixed version is V3.1.2.2 or later. The advisory was published on 2025-04-16 and revised on 2025-05-06 for typo corrections only.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-31350 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-31350

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

  • CVE-2025-31350 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-31350

    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-25-112-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-443402.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-443402.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-112-01

    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

  • 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.