PatchSiren

PatchSiren cyber security CVE debrief

CVE-2025-32840 Siemens CVE debrief

CVE-2025-32840 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 system running a vulnerable version may bypass authorization controls, read from and write to the application's database, and potentially execute code with NT AUTHORITY\NetworkService permissions. Siemens and CISA list vendor remediation to update to V3.1.2.2 or later and recommend restricting access to the exposed service port as an immediate mitigation.

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

OT/ICS defenders, Siemens TeleControl Server Basic administrators, network security teams that can control access to TCP port 8000, and incident responders supporting Windows-based industrial systems.

Technical summary

The advisory describes SQL injection in the internally used LockGateway method of Siemens TeleControl Server Basic. The attack requires authenticated access and network reachability to port 8000 on the target system. Successful exploitation can lead to authorization bypass, database read/write access, and code execution under NT AUTHORITY\NetworkService. The CVSS vector supplied in the advisory is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, with a score of 8.8 (High).

Defensive priority

High. Prioritize remediation on any exposed TeleControl Server Basic instance, especially systems where TCP port 8000 is reachable from networks beyond a tightly controlled trust boundary.

Recommended defensive actions

  • Upgrade Siemens TeleControl Server Basic to V3.1.2.2 or later.
  • Restrict access to TCP port 8000 on affected systems to trusted IP addresses only.
  • Verify whether any TeleControl Server Basic deployments are exposed beyond intended administrative or OT management networks.
  • Review authentication and access-control logs for unusual activity against the affected service, especially on systems reachable on port 8000.
  • Apply CISA and Siemens industrial control system defense-in-depth guidance to reduce service exposure and limit lateral movement risk.

Evidence notes

This debrief is based on the CISA CSAF advisory ICSA-25-112-01 and Siemens product security references included in the source corpus. The source text explicitly identifies the affected product, the LockGateway SQL injection condition, the port 8000 access requirement, the possible impacts, and the vendor-fixed version. The advisory was published on 2025-04-16 and revised on 2025-05-06 for typo fixes only.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-32840 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-32840

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

  • CVE-2025-32840 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-32840

    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.