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Missing AuthenticationWeakness · CWE-306

CVE-2024-41988

CRITICAL · 9.3 CVSS v4.0 Published 2024-10-03
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
TEM Opera Plus FM Family Transmitter allows access to an unprotected endpoint that allows MPFS File System binary image upload without authentication. This file system serves as the basis for the HTTP2 web server module but is also used by the SNMP module and is available to other applications that require basic read-only storage capabilities. This can be exploited to overwrite the flash program memory that holds the web server's main interfaces and execute arbitrary code.

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 TEM Opera Plus FM Family Transmitter contains an unauthenticated file upload endpoint for MPFS (Microchip Persistent Storage Manager) File System binary images. An attacker can exploit this to upload a crafted MPFS image that overwrites the flash memory storing the web server's main interfaces, enabling arbitrary code execution with potentially high privileges on the device firmware.

MitigationImplement authentication on the MPFS upload endpoint, restrict network access to administrative interfaces, and apply any vendor firmware updates that address this vulnerability. Consider network segmentation to isolate the transmitter from untrusted networks.

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
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 device model and firmware version
    Access the device web interface or check the administrative console for the firmware version information. Look for 'TEM Opera Plus FM Family Transmitter' or similar branding in the device status or about page.
    Affected if The device is a TEM Opera Plus FM Family Transmitter and the firmware version is unpatched (prior to vendor fix).
  2. Confirm web server is enabled and accessible
    Attempt to access the device web interface via HTTP/HTTPS on the expected management port (commonly 80/443 or a custom admin port). Check if the main web server pages load.
    Affected if The web server is running and accessible over the network, indicating the vulnerable interface is exposed.
  3. Check for unauthenticated MPFS upload endpoint exposure
    Send a direct HTTP POST request to the MPFS upload endpoint (typically /mpfsupload or similar path used by Microchip's MPFS utility) without providing any authentication credentials. Observe if the endpoint accepts the request or returns an upload form.
    Affected if The MPFS upload endpoint accepts requests without requiring authentication, confirming the vulnerability is present.
  4. Verify authentication is not enforced on administrative interfaces
    Attempt to access protected administrative pages or features without logging in. Check if the device redirects to a login page or denies access, or if content is served without credentials.
    Affected if Administrative interfaces including the MPFS upload feature are accessible without any authentication, meaning the device is vulnerable.

If the device is a TEM Opera Plus FM Family Transmitter with an exposed web interface where the MPFS upload endpoint accepts unauthenticated requests, the environment is affected by this vulnerability.

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

Implement authentication on the MPFS upload endpoint, restrict network access to administrative interfaces, and apply any vendor firmware updates that address this vulnerability. Consider network segmentation to isolate the transmitter from untrusted networks.

Have this fixed Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
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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-2024-41988 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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