Stack-based Buffer OverflowWeakness · CWE-121

CVE-2025-3710

CRITICAL · 9.8 CVSS v3.1 Published 2025-05-09
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
The LCD KVM over IP Switch CL5708IM has a Stack-based Buffer Overflow vulnerability in firmware versions prior to v2.2.215, allowing unauthenticated remote attackers to exploit this vulnerability to execute arbitrary code on the device.

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 LCD KVM over IP Switch CL5708IM contains a stack-based buffer overflow vulnerability in its firmware prior to v2.2.215. The flaw allows unauthenticated remote attackers to send specially crafted input that overflows a buffer on the stack, enabling arbitrary code execution with the privileges of the vulnerable service.

MitigationUpdate firmware to v2.2.215 or later. If immediate patching is not feasible, isolate the KVM device on a restricted network segment and disable external management access to reduce attack surface.

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
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 device model is CL5708IM
    Access the device's web interface or CLI and locate the model identifier in the system information or device status page
    Affected if The device model is LCD KVM over IP Switch CL5708IM
  2. Check firmware version
    Locate the firmware version in the device's web interface under System Information, Device Info, or similar status section; or use the CLI command to display firmware version (such as 'show version' or 'sysinfo')
    Affected if Firmware version is present but lower than v2.2.215 (e.g., v2.2.200, v2.2.100, etc.)
  3. Verify network connectivity is enabled
    Check the device's network settings to confirm the network interface is enabled and the device has an IP address configured
    Affected if The device has network access enabled and is reachable over the network
  4. Assess network exposure
    Review firewall rules, VLAN configuration, or access control lists to determine if the device is accessible from untrusted networks without authentication
    Affected if The device is reachable from network segments that contain untrusted or unknown users

The device is affected if it is a CL5708IM with firmware version prior to v2.2.215 and has network connectivity enabled, making it reachable for unauthenticated remote packet attacks.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update firmware to v2.2.215 or later. If immediate patching is not feasible, isolate the KVM device on a restricted network segment and disable external management access to reduce attack surface.

Recommended fix High confidence

firmware v2.2.215

  1. Obtain the official firmware v2.2.215 for the CL5708IM from the vendor's support website
  2. Access the device's web-based management interface
  3. Navigate to the firmware upgrade or system maintenance section
  4. Upload and apply firmware v2.2.215 to the device
  5. Allow the device to complete the update process and reboot
  6. Verify the firmware has been successfully updated by checking the system information

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

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,600
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

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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-2025-3710 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
  • No weaponised exploit code, or anything meant to cause harm
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