dbcve.org
Iqrouter FirmwareOperating system · Evenroute

CVE-2020-11963

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
IQrouter through 3.3.1, when unconfigured, has multiple remote code execution vulnerabilities in the web-panel because of Bash Shell Metacharacter Injection. 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 · high confidence

The IQrouter through version 3.3.1 contains multiple remote code execution vulnerabilities in its web management panel due to Bash Shell Metacharacter Injection. These vulnerabilities are present only when the device is in an unconfigured, out-of-box state before the forced initial configuration wizard has been completed and a secure password has been set.

MitigationComplete the vendor-mandated initial configuration wizard immediately upon device setup to invalidate this vulnerability, or contact IQrouter for a firmware update that addresses the shell metacharacter injection in the web panel code.

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. Confirm IQrouter model
    Access the device web interface at the default IP (typically 192.168.0.1 or 192.168.1.1) or check physical device labeling for 'Evenroute Iqrouter' branding
    Affected if Device is not an Evenroute IQrouter product
  2. Check firmware version
    Navigate to the web management panel (status or settings page) and locate the firmware version information, or access the device via SSH/Telnet if enabled and run 'fw_printenv' or similar version command
    Affected if Firmware version is 3.3.1 or lower (the vulnerable version range)
  3. Determine if device is in unconfigured state
    Access the web interface without any login credentials. If the initial configuration wizard or setup screen appears automatically without prompting for a password, the device is still in out-of-box unconfigured state
    Affected if The web panel loads the initial setup wizard without requiring authentication, indicating the forced configuration has not been completed
  4. Verify web panel accessibility
    Attempt to access common management paths like '/cgi-bin/luci' or '/admin' without credentials to confirm the panel is reachable in its default state
    Affected if Web management interface is accessible without authentication prompts

You are affected if you have an Evenroute IQrouter with firmware version 3.3.1 or lower that is currently in or was previously left in an unconfigured out-of-box state where the initial setup wizard was accessible without a password.

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 vendor-mandated initial configuration wizard immediately upon device setup to invalidate this vulnerability, or contact IQrouter for a firmware update that addresses the shell metacharacter injection in the web panel code.

Recommended fix Moderate confidence
  1. 1. Complete the forced initial configuration wizard on the IQrouter immediately upon first setup, including setting a strong administrator password
  2. 2. Ensure the web-panel is not accessible from untrusted networks before configuration is complete
  3. 3. If the device has been reset to factory defaults, treat it as an unconfigured device and complete the initial setup wizard promptly
  4. 4. Verify that remote management features are disabled unless explicitly needed and protected by VPN or firewall

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

Fix this in Iqrouter Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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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-2020-11963 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
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  • No spam, self-promotion, credentials, or personal data