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Command InjectionWeakness · CWE-77

CVE-2024-33439

CRITICAL · 9.1 CVSS v3.1 Published 2024-11-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
97/100
Remediation priority · Urgent
Remotely reachable 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
An issue in Kasda LinkSmart Router KW5515 v1.7 and before allows an authenticated remote attacker to execute arbitrary OS commands via cgi parameters.

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

Command injection vulnerability in Kasda LinkSmart Router KW5515 (v1.7 and prior) allows authenticated remote attackers to execute arbitrary OS commands through unsanitized CGI parameters. The CVSS 9.1 score indicates critical severity with potential for complete device compromise.

MitigationApply vendor firmware update when available; if no update exists, implement network segmentation to restrict access to the router management interface and consider disabling remote administration.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

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
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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 router model
    Check the device label, web interface footer, or administrative dashboard for the exact model number (KW5515)
    Affected if The device is a Kasda LinkSmart Router KW5515
  2. Check firmware version
    Log into the router web interface (typically at 192.168.1.1) and navigate to System or Status settings to view the firmware version
    Affected if The installed firmware version is 1.7 or any version prior to 1.7
  3. Verify CGI interface accessibility
    Attempt to access the CGI endpoint (commonly /cgi-bin/ or /cgi/) on the router's web interface from the network
    Affected if The CGI interface responds to requests without being blocked by access controls
  4. Confirm authentication status
    Check if the router administration panel requires login credentials, or determine if default credentials are in use
    Affected if The attacker can obtain valid authentication credentials (including default credentials) to access the management interface

A user is affected if they operate a Kasda LinkSmart Router KW5515 running firmware version 1.7 or earlier with an accessible CGI interface that accepts authenticated commands.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor firmware update when available; if no update exists, implement network segmentation to restrict access to the router management interface and consider disabling remote administration.

Have this fixed 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-2024-33439 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
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