CVE intelligence and bounded remediation

CVE-2019-14237 — Nxp Kinetis Kv1X Firmware security vulnerability

Critical CVSS 9.8

On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by observing CPU registers and the effect of code/instruction execution.

Severity
Critical
CVSS
9.8 (3.1)
Published
2019-09-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-863

Affected products

  • nxp / kinetis_kv1x_firmware
  • nxp / kinetis_kv3x_firmware
  • nxp / kinetis_k8x_firmware

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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