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Stack-based Buffer OverflowWeakness · CWE-121

CVE-2025-3714

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

Stack-based buffer overflow vulnerability in the LCD KVM over IP Switch CL5708IM firmware versions prior to v2.215 allows unauthenticated remote attackers to overwrite stack memory and execute arbitrary code due to insufficient bounds checking on input handling in the device's network management interface.

MitigationUpdate firmware to v2.2.215 or later to patch the vulnerability. If immediate patching is not feasible, isolate the device behind a firewall and restrict management access to trusted networks only.

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 the CL5708IM model
    Locate the product label or check the device's web interface or console output for the exact model number CL5708IM
    Affected if The device is not a CL5708IM model
  2. Check the installed firmware version
    Access the device's web interface (typically via HTTPS on the management IP) and navigate to the Firmware Upgrade or System Information page to view the current firmware version. Alternatively, check via console/SSH using the vendor-specific show version command if available
    Affected if The firmware version is lower than v2.2.215 (e.g., v2.2.200, v2.1.x, etc.)
  3. Verify the KVM over IP network feature is enabled
    Check the device's network settings via the web interface to confirm the IP/Network KVM functionality is enabled and the device has an active IP address
    Affected if The network management interface is enabled and the device is reachable over the network (required for remote exploitation)
  4. Assess network exposure
    Review firewall rules, VLAN placement, or access control lists to determine if the device's management interface is accessible from untrusted networks or the internet
    Affected if The device management port is exposed to untrusted networks or the internet without proper access controls

You are affected if you have a CL5708IM device with firmware version prior to v2.2.215 and the KVM over IP network feature is enabled and 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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update firmware to v2.2.215 or later to patch the vulnerability. If immediate patching is not feasible, isolate the device behind a firewall and restrict management access to trusted networks only.

Recommended fix High confidence

v2.2.215 or later

  1. 1. Identify the current firmware version of the ATEN LCD KVM over IP Switch CL5708IM by accessing the device management interface or checking the device label.
  2. 2. Download the firmware v2.2.215 or later from the official ATEN support website (www.aten.com) or your authorized vendor.
  3. 3. Access the device's web-based management interface using administrator credentials.
  4. 4. Navigate to the Firmware Upgrade or Maintenance section in the device settings.
  5. 5. Upload the downloaded firmware file and initiate the upgrade process.
  6. 6. Wait for the firmware upload and installation to complete - do not power off the device during this process.
  7. 7. After the device restarts, verify the new firmware version is v2.2.215 or later.
  8. 8. Confirm normal device operation and test KVM functionality.
Caveat Review ATEN release notes for v2.2.215 to check for any configuration or feature changes that may require adjustments to existing setups

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

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing6.0 h
  • Review / QA3.0 h
14.0 hours of engineering $2,400
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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-2025-3714 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
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  • Version or environment caveats, and links to real fixes
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