CVE-2024-47939Network attack vector

Unauthenticated code execution via improper HTTP parsing

Published Nov 1, 2024 · Updated May 21, 2025

Stack-based buffer overflow in Ricoh Web Image Monitor allows remote attackers to execute code or cause denial of service via crafted HTTP requests. The embedded web server improperly parses attacker-controlled HTTP requests, overflowing a stack buffer during request handling. The attack requires no authentication or user interaction but has high complexity; the denial of service is not characterized as a hang, crash, or reboot.

CVSS severity7.7
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Ricoh Web Image Monitor allows remote attackers to execute code or cause denial of service via crafted HTTP requests. The embedded web server improperly parses attacker-controlled HTTP requests, overflowing a stack buffer during request handling. The attack requires no authentication or user interaction but has high complexity; the denial of service is not characterized as a hang, crash, or reboot.

The record

CVE
CVE-2024-47939
Published
Nov 1, 2024
Updated
May 21, 2025
Vendor
Ricoh Company, Ltd.
Product
Web Image Monitor
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 1, 2024CVE publishedPublication date reported by the CVE source.
  2. May 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=see the information provided by the vendor

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ricoh Company, Ltd. · Web Image Monitorversion=see the information provided by the vendor

Published CVSS scores

7.7JPCERT/CCCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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