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Code InjectionWeakness · CWE-94

CVE-2024-9154

HIGH · 8.6 CVSS v4.0 Published 2024-12-19
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
92/100
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
A code injection vulnerability in HMS Networks Ewon Flexy 205 allows executing commands on system level on the device. This issue affects Ewon Flexy 205: through 14.8s0 (#2633).

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

Code injection vulnerability in HMS Networks Ewon Flexy 205 industrial VPN gateway allows authenticated attackers to execute commands at the system level on the device. The vulnerability affects versions through 14.8s0, enabling potential full compromise of the device and potentially the industrial network it protects.

MitigationApply vendor-supplied firmware patch when available, or implement network segmentation and strict access controls to limit exposure 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
High
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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 device model
    Access the device web interface or check the physical device label to confirm it is an Ewon Flexy 205 gateway. The vulnerability applies specifically to this model.
    Affected if Device is not an Ewon Flexy 205 model
  2. Check the installed firmware version
    Log into the Ewon Flexy web interface and navigate to the System > Status or Setup > System Information page to view the firmware version. Compare this version against the affected range: versions through 14.8s0 are vulnerable.
    Affected if Firmware version is 14.8s0 or any earlier version
  3. Verify if web-based management is enabled
    Check the device network configuration to confirm if the web-based management interface (HTTP/HTTPS) is enabled and accessible. This is typically found under Setup > Network > Services in the web interface.
    Affected if Web management interface is enabled and reachable from an untrusted network
  4. Confirm authentication is required for the web interface
    Review the user account configuration under Setup > Users to ensure authentication is enforced. The vulnerability requires an authenticated attacker, so verify that user accounts exist and login is enforced.
    Affected if Web interface allows unauthenticated access (this would actually widen the attack surface beyond this specific CVE)

You are affected if the device is an Ewon Flexy 205 running firmware version 14.8s0 or earlier, with the web management interface 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.

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

Apply vendor-supplied firmware patch when available, or implement network segmentation and strict access controls to limit exposure to trusted networks only.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2024-9154 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
  • No spam, self-promotion, credentials, or personal data