FKIE_CVE-2026-3509
Vulnerability from fkie_nvd - Published: 2026-03-24 08:16 - Updated: 2026-06-17 10:43
Severity
Summary
An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit Log of the CODESYS Control runtime system, potentially resulting in a denial‑of‑service (DoS) condition.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "CODESYS Control RTE (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.0",
"status": "affected",
"version": "3.5.17.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control RTE (for Beckhoff CX) SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.0",
"status": "affected",
"version": "3.5.17.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control Win (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.0",
"status": "affected",
"version": "3.5.17.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.0",
"status": "affected",
"version": "3.5.17.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for BeagleBone SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for emPC-A/iMX6 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for IOT2000 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Linux ARM SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Linux SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC100 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC200 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PLCnext SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Raspberry Pi SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for WAGO Touch Panels 600 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Virtual Control SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.1.0.0",
"versionType": "semver"
}
]
}
],
"source": "info@cert.vde.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit Log of the CODESYS Control runtime system, potentially resulting in a denial\u2011of\u2011service (DoS) condition."
},
{
"lang": "es",
"value": "Un atacante remoto no autenticado podr\u00eda controlar la cadena de formato de los mensajes procesados por el Registro de Auditor\u00eda del sistema de tiempo de ejecuci\u00f3n CODESYS Control, resultando potencialmente en una condici\u00f3n de denegaci\u00f3n de servicio (DoS)."
}
],
"id": "CVE-2026-3509",
"lastModified": "2026-06-17T10:43:41.653",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"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"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "info@cert.vde.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3509",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-26T12:35:33.893071Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-24T08:16:01.657",
"references": [
{
"source": "info@cert.vde.com",
"url": "https://certvde.com/de/advisories/VDE-2026-018"
}
],
"sourceIdentifier": "info@cert.vde.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-134"
}
],
"source": "info@cert.vde.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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