CVE intelligence and bounded remediation

CVE-2021-27446 — Weintek Cmt-Svr-100 Firmware security vulnerability

Critical CVSS 10

The Weintek cMT product line is vulnerable to code injection, which may allow an unauthenticated remote attacker to execute commands with root privileges on the operation system.

Severity
Critical
CVSS
10 (3.1)
Published
2022-05-16
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-94

Affected products

  • weintek / cmt-svr-100_firmware
  • weintek / cmt-svr-102_firmware
  • weintek / cmt-svr-200_firmware
  • weintek / cmt-svr-202_firmware
  • weintek / cmt-g01_firmware
  • weintek / cmt-g02_firmware

Showing 6 representative product identities from 16 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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