CVE intelligence and bounded remediation

CVE-2023-27920 — Contec Sv-Cpt-Mc310F Firmware security vulnerability

Medium CVSS 4.3

Improper access control vulnerability in the system date/time setting page of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10 and SV-CPT-MC310F versions prior to Ver.8.10 allows a remote authenticated attacker to alter system date/time of the affected product.

Severity
Medium
CVSS
4.3 (3.1)
Published
2023-05-23
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-863

Affected products

  • contec / sv-cpt-mc310f_firmware
  • contec / sv-cpt-mc310_firmware

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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