CVE-2023-25619Network attack vector

Unauthenticated controller denial of service

Published Apr 19, 2023 · Updated Feb 5, 2025

Improper exceptional-condition handling in affected Modicon controllers allows remote attackers to interrupt service over Modbus TCP. Schneider Electric has not disclosed which Modbus TCP message field or exceptional condition the controller mishandles. Access to the controller's Modbus TCP service is sufficient; the reported consequence is controller denial of service, with no reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.62%
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 exceptional-condition handling in affected Modicon controllers allows remote attackers to interrupt service over Modbus TCP. Schneider Electric has not disclosed which Modbus TCP message field or exceptional condition the controller mishandles. Access to the controller's Modbus TCP service is sufficient; the reported consequence is controller denial of service, with no reported data disclosure or modification.

The record

CVE
CVE-2023-25619
Published
Apr 19, 2023
Updated
Feb 5, 2025
Vendor
Distributed Data Systems
Product
Modicon Premium
Classifications
CWE-754, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 2025Record 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

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · Modicon Premiumversion=All
Distributed Data Systems · Modicon M580 CPUversion=prior to V4.10
Distributed Data Systems · Modicon Momentum Unity M1E Processorversion=All
Distributed Data Systems · Modicon M580 CPU Safetyversion=All
Distributed Data Systems · Modicon Quantumversion=All
Distributed Data Systems · Modicon MC80version=All
Distributed Data Systems · Modicon M340 CPUversion=prior to SV3.51

Published CVSS scores

7.5CISACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5Schneider ElectricCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 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-754Improper Check for Unusual or Exceptional Conditions
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