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PatchSiren cyber security CVE debrief

CVE-2026-46746 Siemens CVE debrief

A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 6). The application does not properly sanitize user input in the /api/sftp/uploadFiles endpoint, allowing the injection of shell command payloads via crafted directory names. These payloads are stored and executed when directory listings are retrieved. This could allow an authenticated remote attacker to execute arbitrary commands on the underlying operating system with the privileges of the affected service user (sinecins).

Vendor
Siemens
Product
SINEC INS
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-23
Advisory published
2026-06-09
Advisory updated
2026-06-23

Who should care

Users of Siemens SINEC INS versions prior to V1.0 SP2 Update 6.

Technical summary

The vulnerability exists in the /api/sftp/uploadFiles endpoint of SINEC INS, where user input is not properly sanitized, allowing for shell command injection via crafted directory names.

Defensive priority

HIGH

Recommended defensive actions

  • Update to SINEC INS V1.0 SP2 Update 6 or later.
  • Implement proper input validation and sanitization for user input in the /api/sftp/uploadFiles endpoint.
  • Restrict access to the affected endpoint to only necessary users and services.
  • Monitor system logs for suspicious activity.

Evidence notes

The vulnerability has a CVSS score of 8.7 and is classified as HIGH severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46746 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46746

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

  • CVE-2026-46746 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46746

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

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.