CVE intelligence and bounded remediation

CVE-2020-8614 — An issue was discovered on Askey AP4000W TDC_V1.01.003 devices

Critical CVSS 9.8

An issue was discovered on Askey AP4000W TDC_V1.01.003 devices. An attacker can perform Remote Code Execution (RCE) by sending a specially crafted network packer to the bd_svr service listening on TCP port 54188.

Severity
Critical
CVSS
9.8 (3.1)
Published
2020-02-13
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-20

Affected products

  • askey / ap4000w_firmware / tdc_v1.01.003

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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