CVE intelligence and bounded remediation

CVE-2016-9157 — Siemens Sicam Pas/Pqs security vulnerability

Critical CVSS 9.8

A vulnerability in Siemens SICAM PAS (all versions before V8.09) could allow a remote attacker to cause a Denial of Service condition and potentially lead to unauthenticated remote code execution by sending specially crafted packets to port 19234/TCP.

Severity
Critical
CVSS
9.8 (3.1)
Published
2016-12-05
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-20, CWE-284

Affected products

  • siemens / sicam_pas/pqs

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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