Improper Synchronization in Monitoring in CODESYS Control Runtime

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-79625
StatePUBLISHED
AssignerCERTVDE
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-30 10:17:17 UTC
Updated2026-09-30 19:57:08 UTC
DescriptionAffected products do not properly synchronize access to their monitoring functionality. When multiple clients send concurrent requests, this may lead to incorrect reads or writes, or to corruption of internal memory structures. An authenticated remote attacker with monitoring access can exploit this issue to cause incorrect data processing or a denial-of-service condition.

Risk And Classification

Primary CVSS: v4.0 7.2 HIGH from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-362 | CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary7.2HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS7.2HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA CODESYS Control RTE SL affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS Control RTE For Beckhoff CX SL affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS Control Win SL affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS Runtime Toolkit affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS Safety SIL2 affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS HMI SL affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS Development System 3 affected 3.0.0.0 3.5.22.40 semver Not specified
CNA CODESYS Control For BeagleBone SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For EmPC-A/iMX6 SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For IOT2000 SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For Linux ARM SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For Linux SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For PFC100 SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For PFC200 SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For PLCnext SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For Raspberry Pi SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Control For WAGO Touch Panels 600 SL affected 3.5.0.0 4.23.0.0 semver Not specified
CNA CODESYS Virtual Control SL affected 3.5.0.0 4.23.0.0 semver Not specified

References

ReferenceSourceLinkTags
www.certvde.com/en/advisories/VDE-2026-097 [email protected] www.certvde.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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