CVE intelligence and bounded remediation

CVE-2023-47802 — Synology Bc500 Firmware security vulnerability

High CVSS 7.2

A vulnerability regarding improper neutralization of special elements used in an OS command ('OS Command Injection') is found in the IP block functionality. This allows remote authenticated users with administrator privileges to execute arbitrary commands via unspecified vectors. The following models with Synology Camera Firmware versions before 1.0.7-0298 may be affected: BC500 and TC500.

Severity
High
CVSS
7.2 (3.1)
Published
2024-06-28
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-78

Affected products

  • synology / bc500_firmware
  • synology / tc500_firmware

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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