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P2r8852e2 FirmwareOperating system · Meritlilin

CVE-2021-30168

CRITICAL · 9.8 CVSS v3.1 Published 2021-04-28
Fix available
A fix is available. Upgrade to 7.1.94.8908 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
The sensitive information of webcam device is not properly protected. Remote attackers can unauthentically grant administrator’s credential and further control the devices.

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 · high confidence

This vulnerability in webcam devices allows unauthenticated remote attackers to access sensitive information and obtain administrator credentials due to improper protection mechanisms, enabling full device compromise.

MitigationApply vendor firmware updates immediately, change default administrative credentials, and restrict network access to webcams through firewall rules or network segmentation.

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
P2r8852e2 FirmwareOperating system
Affected:< 7.1.94.8908
P2r8852e4 FirmwareOperating system
Affected:< 7.1.94.8908
P2r6852e2 FirmwareOperating system
Affected:< 7.1.94.8908
P2r6852e4 FirmwareOperating system
Affected:< 7.1.94.8908
P2r6552e2 FirmwareOperating system
Affected:< 7.1.94.8908
P2r6552e4 FirmwareOperating system
Affected:< 7.1.94.8908
P2r6352ae2 FirmwareOperating system
Affected:< 7.1.94.8908
P2r6352ae4 FirmwareOperating system
Affected:< 7.1.94.8908

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 Meritlilin webcam model
    Access the device web interface or check the device label to confirm the exact model number (P2r8852e2, P2r8852e4, P2r6852e2, P2r6852e4, P2r6552e2, P2r6552e4, P2r6352ae2, or P2r6352ae4).
    Affected if The model matches one of the listed affected variants.
  2. Check firmware version
    Log into the device administrative interface and navigate to the System or About page to view the installed firmware version, or use the manufacturer's diagnostic tool or API if available.
    Affected if The installed firmware version is lower than 7.1.94.8908.
  3. Confirm network accessibility
    Verify that the webcam is reachable over the network from an untrusted interface (such as the internet or an untrusted VLAN).
    Affected if The device is directly exposed to untrusted networks without firewall protection.
  4. Check credential status
    Review whether the default administrative username and password are still in use on the device.
    Affected if Default credentials have not been changed from the manufacturer defaults.

The device is affected if it is a Meritlilin P2r series webcam with firmware version below 7.1.94.8908 and is network-accessible to untrusted attackers.

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 7.1.94.8908 or later
Fixed in 7.1.94.8908
Interim mitigation

Apply vendor firmware updates immediately, change default administrative credentials, and restrict network access to webcams through firewall rules or network segmentation.

Recommended fix High confidence

Firmware version 7.1.94.8908 or later for P2r-series devices

  1. Identify the exact model number of the P2r-series webcam device from the affected list (P2r8852e2, P2r8852e4, P2r6852e2, P2r6852e4, P2r6552e2, P2r6552e4, P2r6352ae2, or P2r6352ae4)
  2. Access the device's administrative web interface or management console
  3. Navigate to the firmware update or system settings section
  4. Download the firmware version 7.1.94.8908 or later from the device manufacturer's official support website
  5. Upload and apply the firmware update following the manufacturer's documented upgrade procedure
  6. After the update completes, verify the device is functioning normally
  7. Confirm the firmware version has been updated to 7.1.94.8908 or higher
Caveat Review manufacturer release notes for any configuration or feature changes that may require adjustment after upgrading

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

Fix this in P2r8852e2 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.

Scan for this in your stack

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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-2021-30168 in production — separate from our analysis above.

No notes yet

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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