CVE-2025-41739 (GCVE-0-2025-41739)
Vulnerability from cvelistv5 – Published: 2025-12-01 10:00 – Updated: 2026-01-07 17:09
VLAI
EPSS
VEX
Title
CODESYS Control - Linux/QNX SysSocket flaw
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.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-01 14:03 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
Impacted products
16 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| CODESYS | CODESYS PLCHandler |
Affected:
3.5.21.0 , < 3.5.21.40
(semver)
|
guessed | |
| CODESYS | CODESYS Remote Target Visu |
Affected:
3.5.21.0 , < 3.5.21.40
(semver)
|
guessed | |
| CODESYS | CODESYS Runtime Toolkit |
Affected:
3.5.21.0 , < 3.5.21.40
(semver)
|
guessed | |
| CODESYS | CODESYS Control for BeagleBone SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for emPC-A/iMX6 SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for IOT2000 SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for Linux ARM SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for Linux SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for PFC100 SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for PFC200 SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for PLCnext SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for Raspberry Pi SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Control for WAGO Touch Panels 600 SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Edge Gateway for Linux |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS TargetVisu for Linux SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed | |
| CODESYS | CODESYS Virtual Control SL |
Affected:
4.15.0.0 , < 4.19.0.0
(semver)
|
guessed |
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"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC200 SL",
"vendor": "CODESYS",
"versions": [
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"lessThan": "4.19.0.0",
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"versionType": "semver"
}
]
},
{
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"product": "CODESYS Control for PLCnext SL",
"vendor": "CODESYS",
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"lessThan": "4.19.0.0",
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]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Raspberry Pi SL",
"vendor": "CODESYS",
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"lessThan": "4.19.0.0",
"status": "affected",
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]
},
{
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"lessThan": "4.19.0.0",
"status": "affected",
"version": "4.15.0.0",
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},
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{
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}
],
"credits": [
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"lang": "en",
"type": "finder",
"user": "00000000-0000-4000-9000-000000000000",
"value": "ABB AG"
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],
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"metrics": [
{
"cvssV3_1": {
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
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}
],
"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-125",
"description": "CWE-125 Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-12-01T10:00:44.373Z",
"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"shortName": "CERTVDE"
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"references": [
{
"url": "https://certvde.com/de/advisories/VDE-2025-099"
}
],
"source": {
"advisory": "VDE-2025-099",
"defect": [
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"discovery": "UNKNOWN"
},
"title": "CODESYS Control - Linux/QNX SysSocket flaw",
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},
"cveMetadata": {
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"assignerShortName": "CERTVDE",
"cveId": "CVE-2025-41739",
"datePublished": "2025-12-01T10:00:44.373Z",
"dateReserved": "2025-04-16T11:17:48.320Z",
"dateUpdated": "2026-01-07T17:09:52.535Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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