CVE-2021-2164
Status: ModifiedMedium (4.9)—
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.23 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Base score: 4.9
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 2.07%
- Percentile among all scored CVEs: 81
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (6)
CWEs
- NVD-CWE-noinfo
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/
- https://security.netapp.com/advisory/ntap-20210513-0002/
- https://www.oracle.com/security-alerts/cpuapr2021.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/
- https://security.netapp.com/advisory/ntap-20210513-0002/
- https://www.oracle.com/security-alerts/cpuapr2021.html
Raw JSON (NVD)
Show
{
"id": "CVE-2021-2164",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-2164",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-09-26T14:44:05.432562Z"
}
}
],
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 4,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
"authentication": "SINGLE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert_us@oracle.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 4.9,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.2
}
]
},
"affected": [
{
"source": "secalert_us@oracle.com",
"affectedData": [
{
"vendor": "Oracle Corporation",
"product": "MySQL Server",
"versions": [
{
"status": "affected",
"version": "8.0.23 and prior"
}
]
}
]
}
],
"published": "2021-04-22T22:15:13.123",
"references": [
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/",
"source": "secalert_us@oracle.com"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/",
"source": "secalert_us@oracle.com"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/",
"source": "secalert_us@oracle.com"
},
{
"url": "https://security.netapp.com/advisory/ntap-20210513-0002/",
"tags": [
"Third Party Advisory"
],
"source": "secalert_us@oracle.com"
},
{
"url": "https://www.oracle.com/security-alerts/cpuapr2021.html",
"tags": [
"Vendor Advisory"
],
"source": "secalert_us@oracle.com"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20210513-0002/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.oracle.com/security-alerts/cpuapr2021.html",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.23 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)."
},
{
"lang": "es",
"value": "Una vulnerabilidad en el producto MySQL Server de Oracle MySQL (componente: Server: Optimizer). Las versiones compatibles que están afectadas son 8.0.23 y anteriores. La vulnerabilidad fácilmente explotable permite a un atacante muy privilegiado con acceso a la red por medio de múltiples protocolos comprometer a MySQL Server. Los ataques con éxito de esta vulnerabilidad pueden resultar en la capacidad no autorizada de causar una suspensión o un bloqueo repetible frecuentemente (DOS completa) de MySQL Server. CVSS 3.1 Puntuación Base 4.9 (Impactos en la Disponibilidad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)"
}
],
"lastModified": "2026-06-17T03:48:56.900",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "45E2906A-3A25-4B17-8DB9-DA88ED3AD056",
"versionEndIncluding": "8.0.23",
"versionStartIncluding": "8.0.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956"
},
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"
},
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*",
"vulnerable": true,
"matchCriteriaId": "3A756737-1CC4-42C2-A4DF-E1C893B4E2D5"
},
{
"criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*",
"vulnerable": true,
"matchCriteriaId": "B55E8D50-99B4-47EC-86F9-699B67D473CE"
},
{
"criteria": "cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F1BE6C1F-2565-4E97-92AA-16563E5660A5"
},
{
"criteria": "cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5735E553-9731-4AAC-BCFF-989377F817B3"
},
{
"criteria": "cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BDFB1169-41A0-4A86-8E4F-FDA9730B1E94"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert_us@oracle.com"
}