CVE intelligence and bounded remediation

CVE-2023-47422 — Tenda Tx9 Firmware security vulnerability

High CVSS 8.8

An access control issue in /usr/sbin/httpd in Tenda TX9 V1 V22.03.02.54, Tenda AX3 V3 V16.03.12.11, Tenda AX9 V1 V22.03.01.46, and Tenda AX12 V1 V22.03.01.46 allows attackers to bypass authentication on any endpoint via a crafted URL.

Severity
High
CVSS
8.8 (3.1)
Published
2024-02-20
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-284

Affected products

  • tenda / tx9_firmware / 22.03.02.54
  • tenda / ax3_firmware / 16.03.12.11
  • tenda / ax9_firmware / 22.03.01.46
  • tenda / ax12_firmware / 22.03.01.46

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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