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CVE-2025-30031 Siemens CVE debrief

CVE-2025-30031 affects Siemens TeleControl Server Basic and is described by CISA and Siemens as an SQL injection flaw in the internally used UpdateUsers method. An authenticated remote attacker with access to port 8000 can bypass authorization controls, read and write the application database, and execute code in the NT AUTHORITY\NetworkService context. The supplied advisory data lists this as a High-severity issue and provides vendor mitigation guidance.

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

Operators and defenders responsible for Siemens TeleControl Server Basic, especially in OT/ICS environments where port 8000 may be reachable from non-trusted networks. Security teams handling Windows-based control server exposure, segmentation, and patch management should prioritize it.

Technical summary

The advisory states that UpdateUsers is vulnerable to SQL injection. Exploitation requires an authenticated remote attacker who can reach the service on port 8000. Successful exploitation can bypass authorization, expose and modify application database contents, and execute code with NT AUTHORITY\NetworkService permissions. The supplied CVSS vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (8.8 High).

Defensive priority

High — prioritize for systems where port 8000 is reachable beyond tightly controlled trust boundaries, and apply the vendor fix promptly.

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.
  • Reduce exposure of the service to the minimum necessary network segments and trust zones.
  • Follow CISA ICS recommended practices and defense-in-depth guidance for industrial control environments.

Evidence notes

The provided source corpus includes both the Siemens advisory reference (SSA-443402) and the CISA CSAF advisory (ICSA-25-112-01), which consistently describe the vulnerable UpdateUsers method, the authenticated remote attack requirement, the port 8000 exposure condition, and the remediation steps. The source timeline shows publication on 2025-04-16 and a later 2025-05-06 revision for typo fixes. The supplied enrichment indicates no CISA KEV listing for this CVE.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-30031 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-30031

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

  • CVE-2025-30031 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-30031

    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.