CVE intelligence and bounded remediation

CVE-2020-25238 — A vulnerability has been identified in PCS neo (Administration Console) (All versions < V3.1), TIA Portal (V15, V15.1 and V16)

High CVSS 7.8

A vulnerability has been identified in PCS neo (Administration Console) (All versions < V3.1), TIA Portal (V15, V15.1 and V16). Manipulating certain files in specific folders could allow a local attacker to execute code with SYSTEM privileges. The security vulnerability could be exploited by an attacker with a valid account and limited access rights on the system.

Severity
High
CVSS
7.8 (3.1)
Published
2021-02-09
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-284, CWE-427

Affected products

  • siemens / simatic_process_control_system_neo
  • siemens / totally_integrated_automation_portal / 15
  • siemens / totally_integrated_automation_portal / 15.1
  • siemens / totally_integrated_automation_portal / 16

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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