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R3600 FirmwareOperating system · Mi

CVE-2020-14100

CRITICAL · 9.8 CVSS v3.1 Published 2020-09-11
Fix available
A fix is available. Upgrade to 1.0.66 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
In Xiaomi router R3600 ROM version<1.0.66, filters in the set_WAN6 interface can be bypassed, causing remote code execution. The router administrator can gain root access from this vulnerability.

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

The Xiaomi R3600 router has a filter bypass vulnerability in the set_WAN6 interface in firmware versions prior to 1.0.66. An attacker can exploit this to bypass security filters and achieve remote code execution with root privileges, effectively giving the router administrator full root access to the device.

MitigationUpgrade Xiaomi R3600 firmware to version 1.0.66 or later to remediate the filter bypass vulnerability in the set_WAN6 interface.

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
R3600 FirmwareOperating system
Affected:< 1.0.66

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. Confirm device model is Xiaomi R3600
    Locate the router model identifier on the device physical label or in the administrative web interface system status page
    Affected if The device is not a Xiaomi R3600 model router (not affected)
  2. Identify the installed firmware version
    Access the router administrative web interface, navigate to the System or Status section, and locate the firmware version field; alternatively, check via command line if SSH/telnet access is available
    Affected if Unable to determine the firmware version (further investigation required)
  3. Compare firmware version against affected range
    Review the identified firmware version number and compare it to the vulnerable range: any version prior to 1.0.66
    Affected if Firmware version is 1.0.65 or lower (the router is affected by the vulnerability)
  4. Verify set_WAN6 interface accessibility
    Check if the set_WAN6 interface is accessible from the WAN side or if remote administration is enabled; this typically requires examining the router's firewall settings and remote management configuration
    Affected if The set_WAN6 interface is exposed to untrusted networks and the firmware is below 1.0.66

The environment is affected if the device is a Xiaomi R3600 router running firmware version 1.0.65 or lower with the set_WAN6 interface 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 1.0.66 or later
Fixed in 1.0.66
Interim mitigation

Upgrade Xiaomi R3600 firmware to version 1.0.66 or later to remediate the filter bypass vulnerability in the set_WAN6 interface.

Recommended fix High confidence

Firmware version 1.0.66

  1. Access the Xiaomi R3600 router administration interface via web browser (typically at 192.168.31.1 or miwifi.com)
  2. Navigate to the firmware upgrade or system settings section
  3. Download the official firmware version 1.0.66 or later from Xiaomi's official support site (privacy.mi.com)
  4. Upload the firmware file and initiate the upgrade process
  5. Wait for the router to complete the firmware flash and reboot automatically
  6. Verify the firmware version has been updated to 1.0.66 or higher in the router admin panel
  7. Reconfigure any custom settings that may have been reset after the upgrade
Caveat Standard firmware upgrade risks apply - backup router configuration before upgrading; upgrade may reset custom settings

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

Fix this in R3600 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

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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-2020-14100 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