CVE intelligence and bounded remediation

CVE-2021-47728 — Selea Izero Box Full Firmware security vulnerability

Critical CVSS 9.8

Selea Targa IP OCR-ANPR Camera contains an unauthenticated command injection vulnerability in utils.php that allows remote attackers to execute arbitrary shell commands. Attackers can exploit the 'addr' and 'port' parameters to inject commands and gain www-data user access through chained local file inclusion techniques.

Severity
Critical
CVSS
9.8 (3.1)
Published
2025-12-09
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-78

Affected products

  • selea / izero_box_full_firmware
  • selea / izero_column_entry/8_firmware
  • selea / izero_column_full/8_firmware
  • selea / targa_504_firmware
  • selea / targa_512_firmware
  • selea / targa_704_ilb_firmware

Showing 6 representative product identities from 15 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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