FKIE_CVE-2026-21936

Vulnerability from fkie_nvd - Published: 2026-01-20 22:15 - Updated: 2026-01-29 15:44
Severity ?
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). 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).
References
secalert_us@oracle.comhttps://www.oracle.com/security-alerts/cpujan2026.htmlVendor Advisory
Impacted products
Vendor Product Version
oracle mysql_cluster *
oracle mysql_cluster *
oracle mysql_cluster *
oracle mysql_cluster *
oracle mysql_server *
oracle mysql_server *
oracle mysql_server *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8B3194AE-3177-4CC0-9FC0-292562A6E971",
              "versionEndIncluding": "7.6.36",
              "versionStartIncluding": "7.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "25C90188-0FF3-4398-BC31-23CC9C49F5EB",
              "versionEndIncluding": "8.0.44",
              "versionStartIncluding": "8.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*",
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              "versionEndIncluding": "8.4.7",
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              "vulnerable": true
            },
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              "criteria": "cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "242ED878-0BEA-4613-8721-1DA44C2BFE3E",
              "versionEndIncluding": "9.5.0",
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            },
            {
              "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C31CF81B-A295-4D90-84D3-377D7184D59D",
              "versionEndIncluding": "8.0.44",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*",
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          "negate": false,
          "operator": "OR"
        }
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  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)."
    }
  ],
  "id": "CVE-2026-21936",
  "lastModified": "2026-01-29T15:44:06.733",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "secalert_us@oracle.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-01-20T22:15:56.277",
  "references": [
    {
      "source": "secalert_us@oracle.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.oracle.com/security-alerts/cpujan2026.html"
    }
  ],
  "sourceIdentifier": "secalert_us@oracle.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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