CVE intelligence and bounded remediation

CVE-2025-52079 — Dlink Dir-820L Firmware security vulnerability

High CVSS 8.8

The administrator password setting of the D-Link DIR-820L 1.06B02 is has Improper Access Control and is vulnerable to Unverified Password Change via crafted POST request to /get_set.ccp.

Severity
High
CVSS
8.8 (3.1)
Published
2025-10-21
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-284

Affected products

  • dlink / dir-820l_firmware / 1.06b02

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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