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Wc7500 FirmwareOperating system · Netgear

CVE-2018-11106

CRITICAL · 9.8 CVSS v3.1 Published 2020-04-01
Fix available
A fix is available. Upgrade to 2.5.0.46 / 6.5.3.5 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
NETGEAR has released fixes for a pre-authentication command injection in request_handler.php security vulnerability on the following product models: WC7500, running firmware versions prior to 6.5.3.5; WC7520, running firmware versions prior to 2.5.0.46; WC7600v1, running firmware versions prior to 6.5.3.5; WC7600v2, running firmware versions prior to 6.5.3.5; and WC9500, running firmware versions prior to 6.5.3.5.

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

A pre-authentication command injection vulnerability exists in request_handler.php on NETGEAR WC7500, WC7520, WC7600v1, WC7600v2, and WC9500 wireless controllers. An unauthenticated attacker can send specially crafted requests to execute arbitrary commands on the underlying operating system with elevated privileges.

MitigationApply the vendor-released firmware updates (WC7500/WC7600v1/WC7600v2/WC9500: 6.5.3.5 or later; WC7520: 2.5.0.46 or later) immediately, as this vulnerability is exploitable without authentication and could allow complete system compromise.

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
Wc7500 FirmwareOperating system
Affected:< 6.5.3.5
Wc7520 FirmwareOperating system
Affected:< 2.5.0.46
Wc7600v1 FirmwareOperating system
Affected:< 6.5.3.5
Wc7600v2 FirmwareOperating system
Affected:< 6.5.3.5
Wc9500 FirmwareOperating system
Affected:< 6.5.3.5

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 the device model
    Access the web management interface or check the device label to confirm the exact model number (WC7500, WC7520, WC7600v1, WC7600v2, or WC9500)
    Affected if The device is not one of these five models - the vulnerability does not apply
  2. Check the firmware version
    Log into the web interface and navigate to the Administration or System Information section to view the installed firmware version
    Affected if The firmware version is below 6.5.3.5 for WC7500/WC7600v1/WC7600v2/WC9500, or below 2.5.0.46 for WC7520
  3. Verify web interface accessibility
    Attempt to access the device's IP address on HTTP/HTTPS ports (typically 80/443) to confirm the management interface is reachable
    Affected if The web interface is accessible from the network - the request_handler.php endpoint would be exploitable
  4. Confirm request_handler.php exists
    Attempt to access the URL path /request_handler.php on the device's web server
    Affected if The request_handler.php file is accessible - this is the vulnerable component where command injection occurs

The device is affected if it is a WC7500, WC7520, WC7600v1, WC7600v2, or WC9500 with firmware below the fixed versions and its web management interface (including request_handler.php) is network-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 2.5.0.46 / 6.5.3.5 or later
Fixed in 2.5.0.466.5.3.5
Interim mitigation

Apply the vendor-released firmware updates (WC7500/WC7600v1/WC7600v2/WC9500: 6.5.3.5 or later; WC7520: 2.5.0.46 or later) immediately, as this vulnerability is exploitable without authentication and could allow complete system compromise.

Recommended fix High confidence

WC7500/7600v1/7600v2/9500 to firmware 6.5.3.5; WC7520 to firmware 2.5.0.46

  1. 1. Determine the current firmware version of the NETGEAR wireless controller (WC7500, WC7520, WC7600v1, WC7600v2, or WC9500) via the web UI or CLI.
  2. 2. Download the appropriate fixed firmware from NETGEAR's official support site (kb.netgear.com) matching your model: version 6.5.3.5 for WC7500, WC7600v1, WC7600v2, and WC9500; version 2.5.0.46 for WC7520.
  3. 3. Back up the device configuration through the Administration > Backup Settings page.
  4. 4. Log into the device's web management interface as an administrator.
  5. 5. Navigate to the Firmware Update or Administration > Firmware Upgrade section.
  6. 6. Upload the downloaded firmware file and initiate the upgrade.
  7. 7. Wait for the device to reboot; verify the new firmware version is displayed after the reboot.
  8. 8. Restore the configuration if needed and confirm that all expected features are operational.
Caveat Firmware upgrade will cause a brief downtime; backup configuration before upgrading and expect possible need to reapply settings after the update.

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

Fix this in Wc7500 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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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-2018-11106 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