CVE-2026-8047 (GCVE-0-2026-8047)
Vulnerability from cvelistv5
Published
2026-05-26 06:49
Modified
2026-05-26 10:48
Severity ?
8.7 (High) - 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
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
VLAI Severity ?
EPSS score ?
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Summary
The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CODESYS | CODESYS Control RTE (SL) |
Version: 3.5.21.0 ≤ |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-8047",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T10:45:06.909963Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T10:48:24.087Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "CODESYS Control RTE (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.20",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control RTE (for Beckhoff CX) SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.20",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control Win (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.20",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS HMI (SL)",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.20",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Runtime Toolkit",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "3.5.22.20",
"status": "affected",
"version": "3.5.21.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for BeagleBone SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for emPC-A/iMX6 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for IOT2000 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Linux ARM SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Linux SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC100 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PFC200 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for PLCnext SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for Raspberry Pi SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Control for WAGO Touch Panels 600 SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "0.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CODESYS Virtual Control SL",
"vendor": "CODESYS",
"versions": [
{
"lessThan": "4.21.0.0",
"status": "affected",
"version": "4.15.0.0",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_rte_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.20",
"versionStartIncluding": "3.5.21.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_rte_for_beckhoff_cx_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.20",
"versionStartIncluding": "3.5.21.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_win_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.20",
"versionStartIncluding": "3.5.21.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_hmi_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.20",
"versionStartIncluding": "3.5.21.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_runtime_toolkit:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.5.22.20",
"versionStartIncluding": "3.5.21.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_beaglebone_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_empc_a_imx6_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_iot2000_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_linux_arm_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_linux_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_pfc100_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_pfc200_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_plcnext_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_raspberry_pi_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_control_for_wago_touch_panels_600_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:codesys:codesys_virtual_control_sl:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.21.0.0",
"versionStartIncluding": "4.15.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device."
}
],
"value": "The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"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-1284",
"description": "CWE-1284 Improper Validation of Specified Quantity in Input",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T06:49:54.813Z",
"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"shortName": "CERTVDE"
},
"references": [
{
"url": "https://www.certvde.com/en/advisories/VDE-2026-057/"
}
],
"source": {
"advisory": "VDE-2026-057",
"defect": [
"CERT@VDE#642073"
],
"discovery": "UNKNOWN"
},
"title": "Out-of-bounds Write in CODESYS Control",
"x_generator": {
"engine": "Vulnogram 0.4.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
"assignerShortName": "CERTVDE",
"cveId": "CVE-2026-8047",
"datePublished": "2026-05-26T06:49:54.813Z",
"dateReserved": "2026-05-06T17:12:05.142Z",
"dateUpdated": "2026-05-26T10:48:24.087Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…