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Smart Camera C2e FirmwareOperating system · Lenovo

CVE-2021-3617

HIGH · 7.2 CVSS v3.1 Published 2021-08-17
Fix available
A fix is available. Upgrade to 01.03.29.16 or later.
See remediation →
78/100
Remediation priority · High
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability was reported in Lenovo Smart Camera X3, X5, and C2E that could allow command injection by setting a specially crafted network configuration. This vulnerability is the same as CNVD-2020-68652.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Command injection vulnerability in Lenovo Smart Camera X3, X5, and C2E allows remote attackers to execute arbitrary OS commands by submitting specially crafted network configuration parameters that are improperly handled and executed by the device firmware.

MitigationApply vendor firmware updates when available. Until then, restrict network access to these cameras to trusted/isolated networks and disable unnecessary remote access features to reduce attack surface.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Smart Camera C2e FirmwareOperating system
Affected:< 01.03.29.16
Smart Camera X3 FirmwareOperating system
Affected:< 01.03.29.16
Smart Camera X5 FirmwareOperating system
Affected:< 01.03.29.16

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the device model
    Locate the model number on the camera device label, in the Lenovo mobile app under device settings, or via network discovery (e.g., UPnP/SSDP scan) showing the device name
    Affected if Device is not a Lenovo Smart Camera X3, X5, or C2E model - stop, you are not affected
  2. Retrieve the current firmware version
    Access the Lenovo mobile app or camera web interface and navigate to Settings > Device Info > Firmware Version. Alternatively, query the device API endpoint if known (often /cgi-bin/devinfo or similar)
    Affected if Firmware version cannot be determined - assume potentially vulnerable if model is affected
  3. Compare firmware version against affected range
    Compare the installed firmware version string to the affected versions: C2e, X3, or X5 with firmware < 01.03.29.16
    Affected if Firmware version is 01.03.29.16 or higher - you are NOT affected; version is below 01.03.29.16 - you ARE affected
  4. Verify network accessibility of configuration interface
    Check if the camera's web interface or mobile app remote access is reachable from untrusted networks. Scan the device IP for open HTTP/HTTPS ports (typically 80/443/8080) from an external network
    Affected if Camera admin interface is exposed to untrusted networks - the command injection can be exploited remotely; interface is only accessible from isolated/trusted network - exploitability is reduced but the vulnerability still exists in the firmware

You are affected if you own a Lenovo Smart Camera X3, X5, or C2E running firmware version earlier than 01.03.29.16, regardless of network exposure, though remote exploitation requires the network configuration interface to be accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 01.03.29.16 or later
Fixed in 01.03.29.16
Interim mitigation

Apply vendor firmware updates when available. Until then, restrict network access to these cameras to trusted/isolated networks and disable unnecessary remote access features to reduce attack surface.

Recommended fix High confidence

Firmware 01.03.29.16 or later for Smart Camera C2e/X3/X5

  1. Identify the exact model number (C2e, X3, or X5) of the affected Lenovo Smart Camera
  2. Access the camera's web interface or mobile application to check the current firmware version
  3. Navigate to Lenovo's official support page for the specific camera model
  4. Download the firmware update (version 01.03.29.16 or later) from Lenovo's official support site
  5. Follow Lenovo's documented firmware update procedure - typically via the web interface or mobile app
  6. Ensure the camera remains powered on throughout the update process
  7. After update completes, verify the firmware version shows 01.03.29.16 or higher
  8. Confirm the vulnerability is addressed by reviewing the camera's network configuration functionality

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Smart Camera C2e Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing10.0 h
  • Review / QA6.0 h
34.0 hours of engineering $5,940
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-3617 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data