CVE-2024-10085Network attack vector

Remote service interruption via OPC UA request flood

Published Sep 1, 2026 · Updated Sep 1, 2026

Resource exhaustion in EcoStruxure OPC UA Server Expert and Modicon Communication Server allows remote attackers to interrupt service. The OPC UA platform allocates resources without effective limits while processing a large volume of OPC UA requests, exhausting capacity needed for normal traffic. Any network client that can reach the OPC UA endpoint can trigger the condition without authentication, causing loss of real-time Modicon controller process data.

CVSS severity8.2
High
EPSS probability0.32%
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

Resource exhaustion in EcoStruxure OPC UA Server Expert and Modicon Communication Server allows remote attackers to interrupt service. The OPC UA platform allocates resources without effective limits while processing a large volume of OPC UA requests, exhausting capacity needed for normal traffic. Any network client that can reach the OPC UA endpoint can trigger the condition without authentication, causing loss of real-time Modicon controller process data.

The record

CVE
CVE-2024-10085
Published
Sep 1, 2026
Updated
Sep 1, 2026
Vendor
Distributed Data Systems
Product
EcoStruxure OPC UA Server Expert
Classifications
CWE-770, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record 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=Versions prior to SV2.01 SP3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · EcoStruxure OPC UA Server Expertversion=Versions prior to SV2.01 SP3
Distributed Data Systems · EcoStruxure Modicon Communication Serverversion=All versions

Published CVSS scores

8.2Schneider Electric CPCERTCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5Schneider Electric CPCERTCVSS: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 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-770Allocation of Resources Without Limits or Throttling
T1499.002Service Exhaustion Flood

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