FKIE_CVE-2025-41739
Vulnerability from fkie_nvd - Published: 2025-12-01 10:16 - Updated: 2026-06-17 09:23
Severity
Summary
An unauthenticated remote attacker, who beats a race condition, can exploit a flaw in the communication servers of the CODESYS Control runtime system on Linux and QNX to trigger an out-of-bounds read via crafted socket communication, potentially causing a denial of service.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "CODESYS PLCHandler",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.21.40",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Remote Target Visu",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.21.40",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.21.40",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for BeagleBone SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for emPC-A/iMX6 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for IOT2000 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Linux ARM SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Linux SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC100 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC200 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PLCnext SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Raspberry Pi SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for WAGO Touch Panels 600 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Edge Gateway for Linux",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS TargetVisu for Linux SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Virtual Control SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
}
],
"source": "info@cert.vde.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An unauthenticated remote attacker, who beats a race condition, can exploit a flaw in the communication servers of the CODESYS Control runtime system on Linux and QNX to trigger an out-of-bounds read via crafted socket communication, potentially causing a denial of service."
}
],
"id": "CVE-2025-41739",
"lastModified": "2026-06-17T09:23:04.017",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "info@cert.vde.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-41739",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-12-01T14:03:10.321003Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-12-01T10:16:01.320",
"references": [
{
"source": "info@cert.vde.com",
"url": "https://certvde.com/de/advisories/VDE-2025-099"
}
],
"sourceIdentifier": "info@cert.vde.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"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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