CVE-2021-34581
Estado: ModificadaAlta (7.5)—
Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.02%
- Percentil entre todas las CVEs puntuadas: 62
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (9)
CWE
- CWE-772
- CWE-772
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-34581",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.8,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 6.9,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "info@cert.vde.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "info@cert.vde.com",
"affectedData": [
{
"vendor": "WAGO",
"product": "750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889",
"versions": [
{
"status": "affected",
"version": "FW4",
"lessThan": "All*",
"versionType": "custom"
}
]
}
]
}
],
"published": "2021-08-31T11:15:07.830",
"references": [
{
"url": "https://cert.vde.com/en-us/advisories/vde-2021-038",
"tags": [
"Third Party Advisory"
],
"source": "info@cert.vde.com"
},
{
"url": "https://cert.vde.com/en-us/advisories/vde-2021-038",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "info@cert.vde.com",
"description": [
{
"lang": "en",
"value": "CWE-772"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-772"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device."
},
{
"lang": "es",
"value": "Una vulnerabilidad de Falta de Liberación de Recursos después del Tiempo de Vida Efectivo en la implementación de OpenSSL de WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 en versiones FW4 hasta FW15, permite a un atacante no autenticado causar DoS en el dispositivo"
}
],
"lastModified": "2026-06-17T03:56:10.183",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-880\\/040-000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "64E837A4-57BE-40EB-8A56-B0BB206FE18F",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-880\\/040-000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "FC027AEF-12BD-45CF-969B-9336F57E104E"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-880\\/025-002_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "919AC39F-D02D-49C0-90D6-F5230C61A7D6",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-880\\/025-002:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E1C30C82-1A6F-42F3-92CA-D1F0BD6DB628"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-880\\/025-001_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "79B295FB-FFCF-459B-9486-3727471654B1",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-880\\/025-001:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E5BF7980-8B31-45AF-869D-531801B98BFD"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-880\\/025-000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "00D72029-8484-452B-B1CD-D0524D531B10",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-880\\/025-000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "B2F43C2B-AA5E-4C09-9459-05273061CCB0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-831\\/000-002_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "81AECA1A-207F-4286-B39C-E75F6E047AE8",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-831\\/000-002:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8CB5953A-51A5-4A60-A066-4280066B968B"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-889_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EEA48F1D-170A-48A4-B599-548209CA005E",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-889:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "57919AAB-2962-4543-810A-C143300351F8"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-881_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "66314186-5478-4DFD-B08D-6FC2B85A6986",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-881:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "6FE51647-62C1-4D3C-91FA-13ACA6CD71D2"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-831_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2AE56B51-58E5-4C2F-9DD8-21DC72274C0E",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-831:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F0631884-FF6F-4AA9-9D76-CDECB5A738FC"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:wago:750-880_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FD8DD66C-05AA-4E92-9B0C-A2732DAB3A21",
"versionEndIncluding": "fw15",
"versionStartIncluding": "fw4"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:wago:750-880:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "CFEAC4D9-15CF-44B8-844D-C012AA4637A2"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "info@cert.vde.com"
}