KerosOperating system · Kerlink

CVE-2024-39148

HIGH · 8.1 CVSS v3.1 Published 2025-12-01
Fix available
A fix is available. Upgrade to 5.12 or later.
See remediation →
90/100
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 service wmp-agent of KerOS prior 5.12 does not properly validate so-called ‘magic URLs’ allowing an unauthenticated remote attacker to execute arbitrary OS commands as root when the service is reachable over network. Typically, the service is protected via local firewall.

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

The wmp-agent service in KerOS versions prior to 5.12 fails to properly validate so-called 'magic URLs', allowing an unauthenticated remote attacker to bypass authentication and execute arbitrary OS commands as root. This is a critical command injection/authorization bypass vulnerability in a network-exposed service.

MitigationUpgrade to KerOS 5.12 or later to obtain the patched wmp-agent service. Additionally, ensure the service remains protected by a local firewall and is not directly exposed to untrusted networks, as defense-in-depth.

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
KerosOperating system
Affected:>= 5.0, < 5.12

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
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/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 Kerlink device and Keros version
    Access the device via SSH or console and run: cat /etc/os-release or look for keros-specific version file. Alternatively, check the web management interface for firmware version information.
    Affected if The device is a Kerlink product running KerOS version 5.0 through 5.11 (any version < 5.12)
  2. Locate the wmp-agent service
    Check if the wmp-agent service exists on the system by running: systemctl list-units | grep wmp-agent or ps aux | grep wmp-agent
    Affected if The wmp-agent service is present and running on the device
  3. Determine wmp-agent network exposure
    Check which ports the wmp-agent service is listening on: netstat -tlnp | grep wmp-agent or ss -tlnp | grep wmp-agent. Also check firewall rules: iptables -L -n or firewall-cmd --list-all
    Affected if The wmp-agent service is bound to a network interface accessible from untrusted networks (0.0.0.0 or externally reachable IP)
  4. Verify magic URL configuration if accessible
    If you have access to the wmp-agent configuration files, examine /etc/kerlink/wmp-agent.cfg or similar paths for any magic URL entries that could be exploited.
    Affected if Magic URL functionality is enabled in the wmp-agent configuration

A defender is affected if they are running any Kerlink Keros version prior to 5.12 with the wmp-agent service exposed to network access.

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 5.12 or later
Fixed in 5.12
Interim mitigation

Upgrade to KerOS 5.12 or later to obtain the patched wmp-agent service. Additionally, ensure the service remains protected by a local firewall and is not directly exposed to untrusted networks, as defense-in-depth.

Recommended fix High confidence

Keros 5.12 or later

  1. Verify current Keros version by checking the device management interface or running 'keros-version' command
  2. Download Keros version 5.12 or later from the official Kerlink support portal (keros.docs.kerlink.com)
  3. Review upgrade documentation for device-specific procedures
  4. Perform firmware upgrade following Kerlink's standard upgrade process
  5. Verify successful upgrade by checking the new version number
  6. Confirm the wmp-agent service is running properly after upgrade

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

Fix this in Keros Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,800
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,080.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-39148 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

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-2024-39148 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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