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CVE-2026-21929

Estado: AnalizadaMedia (5.3)—

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 9.0.0-9.5.0. Difficult to exploit vulnerability allows low 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 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS

Probabilidad de explotación (EPSS)

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 (1)

Oracle — Mysql Server

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-21929",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-21929",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-21T20:53:29.702244Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secalert_us@oracle.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "secalert_us@oracle.com",
      "affectedData": [
        {
          "vendor": "Oracle Corporation",
          "product": "MySQL Server",
          "versions": [
            {
              "status": "affected",
              "version": "9.0.0",
              "versionType": "custom",
              "lessThanOrEqual": "9.5.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-20T22:15:55.410",
  "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: Parser).  Supported versions that are affected are 9.0.0-9.5.0. Difficult to exploit vulnerability allows low 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 5.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad en el producto MySQL Server de Oracle MySQL (componente: Servidor: Analizador sintáctico). Las versiones compatibles que están afectadas son 9.0.0-9.5.0. Vulnerabilidad difícil de explotar permite a un atacante con pocos privilegios con acceso a la red a través de múltiples protocolos comprometer MySQL Server. Ataques exitosos de esta vulnerabilidad pueden resultar en la capacidad no autorizada de causar un bloqueo o un fallo repetible con frecuencia (DoS completo) de MySQL Server. Puntuación base CVSS 3.1 de 5.3 (Impactos en la disponibilidad). Vector CVSS: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)."
    }
  ],
  "lastModified": "2026-06-17T10:19:11.160",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "80A941A0-B16F-477B-9062-EF768F4CAAD4",
              "versionEndIncluding": "9.5.0",
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            }
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          "operator": "OR"
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  "sourceIdentifier": "secalert_us@oracle.com"
}