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Di 7200gv2 FirmwareOperating system · Dlink

CVE-2021-46228

CRITICAL · 9.8 CVSS v3.1 Published 2022-02-04
Fix available
A fix is available. Upgrade to after 21.04.09e1 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
D-Link device DI-7200GV2.E1 v21.04.09E1 was discovered to contain a command injection vulnerability in the function httpd_debug.asp. This vulnerability allows attackers to execute arbitrary commands via the time parameter.

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 command injection vulnerability exists in the httpd_debug.asp function of D-Link DI-7200GV2.E1 firmware v21.04.09E1. The 'time' parameter is not properly sanitized before being passed to a system call, allowing an unauthenticated attacker to inject and execute arbitrary operating system commands with elevated privileges.

MitigationApply available firmware patches; if no patch exists, replace the affected device as it may be end-of-life. Implement network segmentation to limit exposure to untrusted networks.

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
Di 7200gv2 FirmwareOperating system
Affected:<= 21.04.09e1

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
    Log into the router web interface and check the device model on the status or system information page. Alternatively, check the device label or product packaging.
    Affected if The device is not a D-Link DI-7200GV2 model, then this CVE does not apply.
  2. Check the installed firmware version
    In the router web interface, navigate to the System or Status page to view the firmware version. Compare it to the affected version 21.04.09E1 or earlier.
    Affected if The firmware version is 21.04.09E1 or earlier, indicating the device is in the affected version range.
  3. Verify if the httpd_debug.asp endpoint is accessible
    Attempt to access the URL path /httpd_debug.asp on the router's web interface by navigating to it in a browser or sending a request. The page may require authentication or be accessible without credentials.
    Affected if The page loads or responds, indicating the debug functionality is present and potentially exploitable.
  4. Confirm network exposure of the web interface
    Check if the router's web management interface is accessible from untrusted networks (WAN/Internet). Review port forwarding rules, firewall settings, or NAT configurations that expose the router's HTTP/HTTPS ports externally.
    Affected if The router's web interface is directly exposed to the internet or untrusted networks, enabling unauthenticated attackers to reach the vulnerable endpoint.

A user is affected if they have a D-Link DI-7200GV2 device running firmware version 21.04.09E1 or earlier, and the httpd_debug.asp page is accessible (especially from untrusted networks), since the command injection flaw can be exploited through the time parameter without 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 21.04.09e1
Interim mitigation

Apply available firmware patches; if no patch exists, replace the affected device as it may be end-of-life. Implement network segmentation to limit exposure to untrusted networks.

Recommended fix High confidence
  1. This device (DI-7200GV2) has reached End-of-Life (EOL) status and no longer receives firmware updates from D-Link.
  2. Replace the affected D-Link DI-7200GV2 device with a currently supported router that still receives security updates.
  3. If replacement is not immediately possible, place the device behind a firewall and restrict access to the management interface to trusted IPs only.
  4. Disable remote management features if not needed, limiting access to local network only.
Caveat Device is End-of-Life with no patch available; full replacement required

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

Fix this in Di 7200gv2 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2021-46228 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