CVE-2024-5056Network attack vector

Firmware-update and web-service disruption via exposed files

Published Jun 12, 2024 · Updated Aug 1, 2024

Improper file access in Schneider Electric Modicon M340 products allows remote attackers to disrupt firmware updates and web service. The device filesystem exposes specific firmware-update and web-server files or directories to external deletion. Network access to the affected file service is sufficient; deletion can block firmware updates or impair the embedded web server without stopping controller operation.

CVSS severity6.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper file access in Schneider Electric Modicon M340 products allows remote attackers to disrupt firmware updates and web service. The device filesystem exposes specific firmware-update and web-server files or directories to external deletion. Network access to the affected file service is sufficient; deletion can block firmware updates or impair the embedded web server without stopping controller operation.

The record

CVE
CVE-2024-5056
Published
Jun 12, 2024
Updated
Aug 1, 2024
Vendor
Distributed Data Systems
Product
BMXNOE0100
Classifications
CWE-552, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · BMXNOE0100version=All versions
Distributed Data Systems · BMXNOE0110version=All Versions
Distributed Data Systems · Modicon M340 Processorsversion=0 <*; version=All versions
Distributed Data Systems · Modicon M340 Firmwareversion=0 <*

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
6.5Schneider Electric SECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T0814Denial of Service

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo