FKIE_CVE-2020-5947
Vulnerability from fkie_nvd - Published: 2020-11-19 01:15 - Updated: 2026-06-17 03:22
Severity
Summary
In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with the same source and destination port and IP numbers. Only these platforms are affected: BIG-IP 2000 series (C112), BIG-IP 4000 series (C113), BIG-IP i2000 series (C117), BIG-IP i4000 series (C115), BIG-IP Virtual Edition (VE).
References
| URL | Tags | ||
|---|---|---|---|
| f5sirt@f5.com | https://support.f5.com/csp/article/K64571774 | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://support.f5.com/csp/article/K64571774 | Vendor Advisory |
Impacted products
{
"affected": [
{
"affectedData": [
{
"product": "BIG-IP 2000 series (C112), BIG-IP 4000 series (C113), BIG-IP i2000 series (C117), BIG-IP i4000 series (C115), BIG-IP Virtual Edition (VE)",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "16.0.0-16.0.0.1"
},
{
"status": "affected",
"version": "15.1.0-15.1.1"
}
]
}
],
"source": "f5sirt@f5.com"
}
],
"configurations": [
{
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with the same source and destination port and IP numbers. Only these platforms are affected: BIG-IP 2000 series (C112), BIG-IP 4000 series (C113), BIG-IP i2000 series (C117), BIG-IP i4000 series (C115), BIG-IP Virtual Edition (VE)."
},
{
"lang": "es",
"value": "En versiones 16.0.0-16.0.0.1 y 15.1.0-15.1.1, en plataformas BIG-IP espec\u00edficas, unos atacantes pueden obtener n\u00fameros de secuencia TCP del sistema BIG-IP que pueden ser reusadas en conexiones futuras con el mismo puerto de origen y destino y n\u00fameros IP.\u0026#xa0;Solo estas plataformas est\u00e1n afectadas: serie BIG-IP 2000 (C112), serie BIG-IP 4000 (C113), serie BIG-IP i2000 (C117), serie BIG-IP i4000 (C115), BIG-IP Virtual Edition (VE)"
}
],
"id": "CVE-2020-5947",
"lastModified": "2026-06-17T03:22:30.410",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
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"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 4.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
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}
],
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"attackVector": "NETWORK",
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
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"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-11-19T01:15:12.593",
"references": [
{
"source": "f5sirt@f5.com",
"tags": [
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],
"url": "https://support.f5.com/csp/article/K64571774"
},
{
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],
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],
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"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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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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