CVE intelligence and bounded remediation

CVE-2021-3615 — Lenovo Smart Camera C2E Firmware security vulnerability

Medium CVSS 6.8

A vulnerability was reported in Lenovo Smart Camera X3, X5, and C2E that could allow code execution if a specific file exists on the attached SD card. This vulnerability is the same as CNVD-2021-45262.

Severity
Medium
CVSS
6.8 (3.1)
Published
2021-08-17
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-94

Affected products

  • lenovo / smart_camera_c2e_firmware
  • lenovo / smart_camera_x3_firmware
  • lenovo / smart_camera_x5_firmware

Matched remediation archetype

Command, code, expression, and template injection

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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