Search
Find a vulnerability
Search criteria
4 vulnerabilities found for Development System 3 by CODESYS
CVE-2026-76992 (GCVE-0-2026-76992)
Vulnerability from nvd – Published: 2026-09-30 11:07 – Updated: 2026-09-30 15:28
VLAI
EPSS
VEX
Title
Uncontrolled Memory Allocation in CODESYS Gateway Client
Summary
The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:48 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | Development System 3 |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Gateway |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Edge Gateway for Windows |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | HMI (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | OPC DA Server SL |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | PLCHandler |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Runtime Toolkit |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Edge Gateway for Linux |
Affected:
3.15.0.0 , < 4.23.0.0
(generic)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-76992",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-30T14:48:15.816736Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T15:28:07.834Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Development System 3",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Gateway",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Edge Gateway for Windows",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "HMI (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "OPC DA Server SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "PLCHandler",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Edge Gateway for Linux",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.15.0.0",
"versionType": "generic"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_development_system_3:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_gateway:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_edge_gateway_for_windows:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_hmi_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_opc_da_server_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_plchandler:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_runtime_toolkit:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_edge_gateway_for_linux:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.23.0.0",
"versionStartIncluding": "3.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Delta Electronics Inc."
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity.\u003c/p\u003e"
}
],
"value": "The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T11:07:45.751Z",
"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"shortName": "CERTVDE"
},
"references": [
{
"url": "https://www.certvde.com/en/advisories/VDE-2026-094/"
}
],
"source": {
"advisory": "VDE-2026-094",
"defect": [
"CERT@VDE#642222"
],
"discovery": "UNKNOWN"
},
"title": "Uncontrolled Memory Allocation in CODESYS Gateway Client",
"x_generator": {
"engine": "Vulnogram 0.4.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"assignerShortName": "CERTVDE",
"cveId": "CVE-2026-76992",
"datePublished": "2026-09-30T11:07:45.751Z",
"dateReserved": "2026-08-20T06:57:08.465Z",
"dateUpdated": "2026-09-30T15:28:07.834Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-79625 (GCVE-0-2026-79625)
Vulnerability from nvd – Published: 2026-09-30 09:23 – Updated: 2026-09-30 13:49
VLAI
EPSS
VEX
Title
Improper Synchronization in Monitoring in CODESYS Control Runtime
Summary
Affected 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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:49 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
18 products
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | Control RTE (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control RTE (for Beckhoff CX) SL |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control Win (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Runtime Toolkit |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Safety SIL2 |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | HMI (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Development System 3 |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control for BeagleBone SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for emPC-A/iMX6 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for IOT2000 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Linux ARM SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Linux SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PFC100 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PFC200 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PLCnext SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Raspberry Pi SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for WAGO Touch Panels 600 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Virtual Control SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-79625",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-30T13:49:04.420443Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T13:49:14.992Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Control RTE (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control RTE (for Beckhoff CX) SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control Win (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Safety SIL2",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "HMI (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Development System 3",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for BeagleBone SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for emPC-A/iMX6 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for IOT2000 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for Linux ARM SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for Linux SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for PFC100 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for PFC200 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for PLCnext SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for Raspberry Pi SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for WAGO Touch Panels 600 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Virtual Control SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eAffected 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.\u003c/p\u003e"
}
],
"value": "Affected 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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T09:23:16.775Z",
"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"shortName": "CERTVDE"
},
"references": [
{
"url": "https://www.certvde.com/en/advisories/VDE-2026-097/"
}
],
"source": {
"advisory": "VDE-2026-097",
"defect": [
"CERT@VDE#642221"
],
"discovery": "UNKNOWN"
},
"title": "Improper Synchronization in Monitoring in CODESYS Control Runtime",
"x_generator": {
"engine": "Vulnogram 0.4.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"assignerShortName": "CERTVDE",
"cveId": "CVE-2026-79625",
"datePublished": "2026-09-30T09:23:16.775Z",
"dateReserved": "2026-08-25T08:46:38.207Z",
"dateUpdated": "2026-09-30T13:49:14.992Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-76992 (GCVE-0-2026-76992)
Vulnerability from cvelistv5 – Published: 2026-09-30 11:07 – Updated: 2026-09-30 15:28
VLAI
EPSS
VEX
Title
Uncontrolled Memory Allocation in CODESYS Gateway Client
Summary
The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:48 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | Development System 3 |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Gateway |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Edge Gateway for Windows |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | HMI (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | OPC DA Server SL |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | PLCHandler |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Runtime Toolkit |
Affected:
3.0.0.0 , < 3.5.22.40
(generic)
|
|
| CODESYS | Edge Gateway for Linux |
Affected:
3.15.0.0 , < 4.23.0.0
(generic)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-76992",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-30T14:48:15.816736Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T15:28:07.834Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Development System 3",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Gateway",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Edge Gateway for Windows",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "HMI (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "OPC DA Server SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "PLCHandler",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "generic"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Edge Gateway for Linux",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.15.0.0",
"versionType": "generic"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_development_system_3:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_gateway:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_edge_gateway_for_windows:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_hmi_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_opc_da_server_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_plchandler:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_runtime_toolkit:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.40",
"versionStartIncluding": "3.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_edge_gateway_for_linux:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.23.0.0",
"versionStartIncluding": "3.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Delta Electronics Inc."
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity.\u003c/p\u003e"
}
],
"value": "The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T11:07:45.751Z",
"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"shortName": "CERTVDE"
},
"references": [
{
"url": "https://www.certvde.com/en/advisories/VDE-2026-094/"
}
],
"source": {
"advisory": "VDE-2026-094",
"defect": [
"CERT@VDE#642222"
],
"discovery": "UNKNOWN"
},
"title": "Uncontrolled Memory Allocation in CODESYS Gateway Client",
"x_generator": {
"engine": "Vulnogram 0.4.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"assignerShortName": "CERTVDE",
"cveId": "CVE-2026-76992",
"datePublished": "2026-09-30T11:07:45.751Z",
"dateReserved": "2026-08-20T06:57:08.465Z",
"dateUpdated": "2026-09-30T15:28:07.834Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-79625 (GCVE-0-2026-79625)
Vulnerability from cvelistv5 – Published: 2026-09-30 09:23 – Updated: 2026-09-30 13:49
VLAI
EPSS
VEX
Title
Improper Synchronization in Monitoring in CODESYS Control Runtime
Summary
Affected 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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:49 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
18 products
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | Control RTE (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control RTE (for Beckhoff CX) SL |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control Win (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Runtime Toolkit |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Safety SIL2 |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | HMI (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Development System 3 |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control for BeagleBone SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for emPC-A/iMX6 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for IOT2000 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Linux ARM SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Linux SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PFC100 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PFC200 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PLCnext SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Raspberry Pi SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for WAGO Touch Panels 600 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Virtual Control SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-79625",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-30T13:49:04.420443Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T13:49:14.992Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Control RTE (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control RTE (for Beckhoff CX) SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control Win (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Safety SIL2",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "HMI (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Development System 3",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.40",
"status": "affected",
"version": "3.0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for BeagleBone SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for emPC-A/iMX6 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for IOT2000 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for Linux ARM SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for Linux SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for PFC100 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for PFC200 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for PLCnext SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for Raspberry Pi SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Control for WAGO Touch Panels 600 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Virtual Control SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.23.0.0",
"status": "affected",
"version": "3.5.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eAffected 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.\u003c/p\u003e"
}
],
"value": "Affected 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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T09:23:16.775Z",
"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"shortName": "CERTVDE"
},
"references": [
{
"url": "https://www.certvde.com/en/advisories/VDE-2026-097/"
}
],
"source": {
"advisory": "VDE-2026-097",
"defect": [
"CERT@VDE#642221"
],
"discovery": "UNKNOWN"
},
"title": "Improper Synchronization in Monitoring in CODESYS Control Runtime",
"x_generator": {
"engine": "Vulnogram 0.4.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"assignerShortName": "CERTVDE",
"cveId": "CVE-2026-79625",
"datePublished": "2026-09-30T09:23:16.775Z",
"dateReserved": "2026-08-25T08:46:38.207Z",
"dateUpdated": "2026-09-30T13:49:14.992Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}