CVE intelligence and bounded remediation

CVE-2024-57677 — Dlink Dir-816 Firmware security vulnerability

Medium CVSS 6.5

An access control issue in the component form2Wan.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the wan service of the device via a crafted POST request.

Severity
Medium
CVSS
6.5 (3.1)
Published
2025-01-16
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-863

Affected products

  • dlink / dir-816_firmware / 1.10cnb05_r1b011d88210

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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