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Iqrouter FirmwareOperating system · Evenroute

CVE-2020-11967

CRITICAL · 9.8 CVSS v3.1 Published 2020-04-21
Fix available
A fix is available. Upgrade to after 3.3.1 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 IQrouter through 3.3.1, remote attackers can control the device (restart network, reboot, upgrade, reset) because of Incorrect Access Control. Note: The vendor claims that this vulnerability can only occur on a brand-new network that, after initiating the forced initial configuration (which has a required step for setting a secure password on the system), makes this CVE invalid. This vulnerability is “true for any unconfigured release of OpenWRT, and true of many other new Linux distros prior to being configured for the first time”

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

Incorrect Access Control vulnerability in IQrouter firmware 3.3.1 and prior allows remote unauthenticated attackers to execute administrative commands (network restart, reboot, firmware upgrade, factory reset) on the device. The vulnerability stems from the device being accessible without authentication during the pre-initial configuration state, before an administrator sets a secure password.

MitigationComplete the forced initial configuration immediately upon device setup to establish administrator credentials and disable unauthenticated access. Restrict network exposure during the configuration phase as a compensating control.

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
Iqrouter FirmwareOperating system
Affected:<= 3.3.1

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. Check IQrouter firmware version
    Access the device web interface or check via CLI (if available) and look for the firmware version displayed in the admin panel or system status page
    Affected if Firmware version displayed is 3.3.1 or lower
  2. Determine if device has completed initial configuration
    Attempt to access the device admin interface without providing credentials. A device in pre-initial configuration state typically presents a setup wizard or configuration screen without requiring a password
    Affected if Device admin interface is fully accessible without any authentication and presents a setup/configuration wizard instead of a login prompt
  3. Check if administrative endpoints respond without authentication
    Send HTTP requests to common administrative paths such as /admin, /settings, or /reboot without including any authentication headers or credentials
    Affected if Administrative endpoints return valid responses (not 401 or 403 errors) without requiring any authentication
  4. Verify if network management functions are accessible
    Test if API endpoints for commands like network restart, reboot, or factory reset are reachable without authentication (e.g., POST requests to /api/reboot or similar endpoints)
    Affected if Device accepts and processes administrative commands (reboot, factory reset, firmware upgrade) without requiring any authentication credentials

A user is affected if their IQrouter is running firmware version 3.3.1 or lower AND the device is in or returns to a pre-initial configuration state where administrative functions are accessible without any password authentication.

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 a release after 3.3.1
Interim mitigation

Complete the forced initial configuration immediately upon device setup to establish administrator credentials and disable unauthenticated access. Restrict network exposure during the configuration phase as a compensating control.

Recommended fix High confidence
  1. 1. Power on the Iqrouter device and connect to it via Ethernet or WiFi
  2. 2. Access the device's web interface by navigating to the default IP address (typically 192.168.1.1 or as indicated in the setup documentation)
  3. 3. Complete the forced initial configuration wizard that prompts upon first access
  4. 4. During the setup process, create and confirm a strong, unique administrator password when prompted
  5. 5. Verify the configuration is saved and the password is applied
  6. 6. Ensure remote management interfaces are disabled or properly secured if not needed

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

Fix this in Iqrouter Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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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-2020-11967 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