CVE intelligence and bounded remediation

CVE-2021-35326 — Totolink A720R Firmware security vulnerability

High CVSS 7.5

A vulnerability in TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows attackers to download the configuration file via sending a crafted HTTP request.

Severity
High
CVSS
7.5 (3.1)
Published
2021-08-05
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • totolink / a720r_firmware / 4.1.5cu.470_b20200911

Matched remediation archetype

General vulnerability remediation

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Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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