dbcve.org
Lr1200gb FirmwareOperating system · Totolink

CVE-2024-0574

CRITICAL · 9.8 CVSS v3.1 Published 2024-01-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
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
A vulnerability was found in Totolink LR1200GB 9.1.0u.6619_B20230130 and classified as critical. Affected by this issue is the function setParentalRules of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument sTime leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-250790 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

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 stack-based buffer overflow vulnerability exists in the setParentalRules function of /cgi-bin/cstecgi.cgi on Totolink LR1200GB firmware 9.1.0u.6619_B20230130. The sTime argument is not properly bounds-checked before being copied to a stack buffer, allowing an attacker to overwrite adjacent memory and potentially achieve remote code execution.

MitigationRestrict access to the router's web interface from untrusted networks, disable parental control features if not needed, and monitor for vendor firmware updates. If no update is forthcoming, consider replacing the device.

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
Lr1200gb FirmwareOperating system
Affected:= 9.1.0u.6619_b20230130

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 device model
    Access the router web interface or check device labeling to confirm it is a Totolink LR1200GB
    Affected if Device is not a Totolink LR1200GB, then not affected by this specific CVE
  2. Check firmware version
    Log into the router web interface and navigate to System Status or Firmware Upgrade section to view the installed firmware version. Alternatively, check via CLI if accessible or extract from firmware file.
    Affected if Installed firmware version is 9.1.0u.6619_B20230130 exactly, then the device is affected
  3. Verify vulnerable CGI binary exists
    Attempt to access or probe /cgi-bin/cstecgi.cgi on the router (e.g., via HTTP request). If the endpoint responds, the binary is present.
    Affected if The /cgi-bin/cstecgi.cgi binary is present and responds, the vulnerability is exploitable if other conditions met
  4. Confirm parental control feature is enabled
    Log into the router web interface and check if Parental Control or similar feature is configured or active in the settings.
    Affected if Parental Control feature is enabled or configured, the setParentalRules function can be triggered and the vulnerability is reachable
  5. Check network exposure of management interface
    Determine if the router web interface (port 80/443) is exposed to untrusted networks or directly to the internet by checking port scans or firewall rules.
    Affected if The management interface is accessible from untrusted networks, an attacker can reach the vulnerable endpoint

Device is affected if it is a Totolink LR1200GB running firmware version 9.1.0u.6619_B20230130, with the /cgi-bin/cstecgi.cgi binary present and the parental control feature exposed to network attackers.

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

Restrict access to the router's web interface from untrusted networks, disable parental control features if not needed, and monitor for vendor firmware updates. If no update is forthcoming, consider replacing the device.

Fix this in Lr1200gb Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
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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-2024-0574 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
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  • Version or environment caveats, and links to real fixes
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