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Stack-based Buffer OverflowWeakness · CWE-121

CVE-2024-47939

HIGH · 7.7 CVSS v3.0 Published 2024-11-01
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
86/100
Remediation priority · High
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
Stack-based buffer overflow vulnerability exists in multiple laser printers and MFPs which implement Ricoh Web Image Monitor. If this vulnerability is exploited, receiving a specially crafted request created and sent by an attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition. As for the details of affected product names and versions, refer to the information provided by the vendors under [References].

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

A stack-based buffer overflow vulnerability exists in Ricoh Web Image Monitor across multiple laser printers and multifunction printers. The flaw is triggered by processing specially crafted HTTP requests, allowing attackers to potentially execute arbitrary code or cause denial of service.

MitigationApply vendor-supplied firmware updates to affected printer and MFP devices; until patches are available, restrict network access to Web Image Monitor or disable the service if not required.

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

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

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 printer/MFP control panel or admin web interface and retrieve the device model information. Alternatively, check the device label or documentation.
    Affected if The device is a Ricoh laser printer or multifunction printer model that includes Web Image Monitor functionality.
  2. Confirm Web Image Monitor is enabled
    Log into the printer admin interface and navigate to Network Settings or Services configuration. Look for Web Image Monitor (also labeled as Web Image Monitor or HTTP service) and verify its status is enabled.
    Affected if Web Image Monitor service is enabled and accessible on the network.
  3. Determine the installed firmware version
    In the printer admin web interface, locate the System/Counter or Maintenance section to find the current firmware version. Alternatively, print a configuration page from the control panel that lists firmware information.
    Affected if The installed firmware version matches any version known to be affected by CVE-2024-47939, or the firmware is outdated and no patch has been applied.
  4. Check network exposure of HTTP service
    From a workstation on the network, attempt to access the Web Image Monitor by entering the printer IP address in a web browser (for example: http://<printer-ip>:80 or port 8000). Verify whether the service is reachable from network segments that are not strictly controlled.
    Affected if Web Image Monitor is accessible from untrusted network segments or the internet.
  5. Review for suspicious HTTP requests or service anomalies
    Check printer logs or syslog exports for unusual HTTP request patterns, failed authentication attempts, or service restarts that may indicate exploitation attempts.

A user is affected if they operate a Ricoh laser printer or MFP with Web Image Monitor enabled and the installed firmware version falls within the affected range for CVE-2024-47939.

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 updates to affected printer and MFP devices; until patches are available, restrict network access to Web Image Monitor or disable the service if not required.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,560
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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-2024-47939 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