CVE intelligence and bounded remediation

CVE-2023-46665 — Sielco Polyeco500 Firmware security vulnerability

Critical CVSS 9.8

Sielco PolyEco1000 is vulnerable to an authentication bypass vulnerability due to an attacker modifying passwords in a POST request and gain unauthorized access to the affected device with administrative privileges.

Severity
Critical
CVSS
9.8 (3.1)
Published
2023-10-26
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-284

Affected products

  • sielco / polyeco500_firmware / 1.7.0
  • sielco / polyeco500_firmware / 10.16
  • sielco / polyeco300_firmware / 2.0.0
  • sielco / polyeco300_firmware / 2.0.2
  • sielco / polyeco300_firmware / 10.19
  • sielco / polyeco1000_firmware / 1.9.3

Showing 6 representative product identities from 9 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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