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CVE-2025-1097 Siemens CVE debrief

CVE-2025-1097 is a high-severity issue mapped by Siemens to Insights Hub Private Cloud through the ingress-nginx component. The advisory says the auth-tls-match-cn Ingress annotation can be abused to inject nginx configuration, which may lead to arbitrary code execution in the ingress-nginx controller context and disclosure of Secrets accessible to that controller. Siemens notes that, in the default installation, the controller can access all Secrets cluster-wide. Because the vulnerable path sits in a widely used ingress controller, the practical risk is not limited to application traffic handling: a successful abuse can expand into controller compromise and broader cluster exposure. The supplied advisory does not include version ranges in the corpus provided here, so response should focus on vendor patch guidance, deployment inventory, and immediate reduction of annotation-driven exposure.

Vendor
Siemens
Product
Insights Hub Private Cloud
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-04-08
Original CVE updated
2025-04-08
Advisory published
2025-04-08
Advisory updated
2025-04-08

Who should care

Siemens Insights Hub Private Cloud operators, Kubernetes platform teams, ingress-nginx administrators, and defenders responsible for service accounts and Secret exposure in affected clusters.

Technical summary

The advisory states that the auth-tls-match-cn Ingress annotation can inject configuration into nginx. That condition can be leveraged for arbitrary code execution in the ingress-nginx controller context and for disclosure of Secrets the controller can read. The risk is amplified when the controller has broad Secret access, which the advisory says is true in the default installation.

Defensive priority

High: treat as urgent for any environment running the affected Siemens product or an ingress-nginx deployment with untrusted Ingress annotation control. Prioritize patching, exposure review, and Secret-access minimization.

Recommended defensive actions

  • Contact Siemens customer support to obtain patch and update guidance for Insights Hub Private Cloud.
  • Inventory deployments that use ingress-nginx and confirm whether auth-tls-match-cn or similar annotation-driven configuration paths are enabled.
  • Review the ingress-nginx controller's service account and Secret permissions; reduce access to the minimum required.
  • Audit existing Ingress objects for unexpected or unauthorized annotation values and monitor for configuration drift.
  • Apply vendor-recommended updates as soon as they are available and validate the fix in a controlled environment before production rollout.
  • Follow CISA and ICS defense-in-depth guidance for segmentation, least privilege, and monitoring around affected systems.

Evidence notes

The supplied Siemens/CISA advisory for ICSA-25-100-05 states that the auth-tls-match-cn Ingress annotation can inject configuration into nginx, leading to arbitrary code execution in the ingress-nginx controller and disclosure of accessible Secrets. It also notes that the default installation allows the controller to access all Secrets cluster-wide. The source corpus identifies Siemens Insights Hub Private Cloud as the affected product and provides vendor remediation guidance to contact customer support for patch and update information.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-1097 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-1097

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

  • CVE-2025-1097 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-1097

    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-25-100-05.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-817234.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-817234.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-100-05

    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.