CVE intelligence and bounded remediation

CVE-2020-2492 — If exploited, the command injection vulnerability could allow remote attackers to execute arbitrary commands

High CVSS 7.2

If exploited, the command injection vulnerability could allow remote attackers to execute arbitrary commands. This issue affects: QNAP Systems Inc. QTS versions prior to 4.4.3.1421 on build 20200907.

Severity
High
CVSS
7.2 (3.1)
Published
2020-11-16
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-77, CWE-78

Affected products

  • qnap / qts

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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