CVE-2026-21964

{"id": "CVE-2026-21964", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21964", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-21T20:01:12.826067Z"}}], "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": "8.0.0", "versionType": "custom", "lessThanOrEqual": "8.0.44"}, {"status": "affected", "version": "8.4.0", "versionType": "custom", "lessThanOrEqual": "8.4.7"}, {"status": "affected", "version": "9.0.0", "versionType": "custom", "lessThanOrEqual": "9.5.0"}]}]}], "published": "2026-01-20T22:15:59.350", "references": [{"url": "https://www.oracle.com/security-alerts/cpujan2026.html", "tags": ["Vendor Advisory"], "source": "secalert_us@oracle.com"}], "vulnStatus": "Analyzed", "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: Thread Pooling). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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": "Vulnerabilidad en el producto MySQL Server de Oracle MySQL (componente: Server: Thread Pooling). Las versiones soportadas que est\u00e1n afectadas son 8.0.0-8.0.44, 8.4.0-8.4.7 y 9.0.0-9.5.0. La vulnerabilidad f\u00e1cilmente explotable permite a un atacante con altos privilegios y acceso de red a trav\u00e9s de m\u00faltiples protocolos comprometer MySQL Server. Los ataques exitosos de esta vulnerabilidad pueden resultar en la capacidad no autorizada de causar un cuelgue o un fallo (crash) frecuentemente repetible (DoS completo) de MySQL Server. Puntuaci\u00f3n Base CVSS 3.1 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": "2026-06-17T10:19:14.763", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1F5EEA23-CE0F-4E73-A0BA-4DCE0CFE5D40", "versionEndIncluding": "8.0.44", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DCF15521-E485-4CE3-8C2C-36CA8BB5CB30", "versionEndIncluding": "8.4.7", "versionStartIncluding": "8.4.0"}, {"criteria": "cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "08F7C250-E6A6-4A49-982E-4DF74B79E927", "versionEndIncluding": "9.5.0", "versionStartIncluding": "9.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "secalert_us@oracle.com"}