CVE-2021-23034
Estado: ModificadaAlta (7.5)—
On BIG-IP version 16.x before 16.1.0 and 15.1.x before 15.1.3.1, when a DNS profile using a DNS cache resolver is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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: 0.95%
- Percentil entre todas las CVEs puntuadas: 60
- Fecha de la puntuación: 7/10/2026
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 (11)
F5 — Big-ip Access Policy ManagerF5 — Big-ip Advanced Firewall ManagerF5 — Big-ip AnalyticsF5 — Big-ip Application Acceleration ManagerF5 — Big-ip Application Security ManagerF5 — Big-ip Domain Name SystemF5 — Big-ip Fraud Protection ServiceF5 — Big-ip Global Traffic ManagerF5 — Big-ip Link ControllerF5 — Big-ip Local Traffic ManagerF5 — Big-ip Policy Enforcement Manager
CWE
- CWE-20
- CWE-668
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-23034",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.1,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 6.9,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"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": "f5sirt@f5.com",
"affectedData": [
{
"vendor": "n/a",
"product": "BIG-IP",
"versions": [
{
"status": "affected",
"version": "16.x before 16.1.0 and 15.1.x before 15.1.3.1"
}
]
}
]
}
],
"published": "2021-09-14T18:15:08.180",
"references": [
{
"url": "https://support.f5.com/csp/article/K30523121",
"tags": [
"Vendor Advisory"
],
"source": "f5sirt@f5.com"
},
{
"url": "https://support.f5.com/csp/article/K30523121",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "f5sirt@f5.com",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-668"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "On BIG-IP version 16.x before 16.1.0 and 15.1.x before 15.1.3.1, when a DNS profile using a DNS cache resolver is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
},
{
"lang": "es",
"value": "En BIG-IP versiones 16.x anteriores a 16.1.0 y versiones 15.1.x anteriores a 15.1.3.1, cuando se configura un perfil DNS usando un DNS caché resolver en un servidor virtual, las peticiones no divulgadas pueden causar la terminación del proceso del Traffic Management Microkernel (TMM). Nota: Las versiones de software que han alcanzado End of Technical Support (EoTS) no son evaluadas"
}
],
"lastModified": "2026-06-17T03:38:15.060",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6E57675D-7F7C-45D3-B1E2-DFE28A077F1E",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FFB4E22B-105A-48A4-B5C3-3FF5D03A9947",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A96587ED-6A2A-47AE-AAF3-D1133B768EE2",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "75DD866A-FE32-44C9-93D0-AF21E30230A0",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "09813708-4D04-4EB0-B341-400ABA36D8E6",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "87F34592-8AD7-4C61-88FD-BBA0C9C3C921",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "81F90899-0216-4ABF-B17E-F46B47D17CA1",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E7BBDB4C-3210-42AD-8276-BAA30B8C25EC",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E4B53FEB-1754-49D4-953D-146D92CAC3BF",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "85428C51-3AD9-4704-A21E-229A0846FFA7",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F9520702-C1E2-42A2-914A-C1A248D36C96",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B482DB60-D251-4478-83C9-073EE0759BF4",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4A19121E-EBEC-4B05-B4CB-A93C6C66604E",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8CE83140-4BCD-4E69-A837-7FD8141FCD3C",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "52D6CC00-21A5-4AC5-A462-E4AB4E2BD11A",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A701279F-6D0E-4282-AB53-B65F199BCDE3",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "86447162-A295-4153-96DE-922DFE98B9DD",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FB263BCB-FDC0-4856-AD2D-1D4532352115",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C3BC4F3B-D2F3-48D3-BC24-908535564289",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "34E7B881-9DAF-4B1A-8EF2-7277C4DFDEBC",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "922A4868-7E11-4F57-B88F-059349DFF958",
"versionEndExcluding": "15.1.3.1",
"versionStartIncluding": "15.1.0"
},
{
"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D5E7D266-635F-43C6-81B5-160C2E6A7686",
"versionEndExcluding": "16.1.0",
"versionStartIncluding": "16.0.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "f5sirt@f5.com"
}