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    2 vulnerabilities found for Oracle Net Services by Oracle Corporation

    CVE-2026-47040 (GCVE-0-2026-47040)

    Vulnerability from nvd – Published: 2026-07-21 21:33 – Updated: 2026-07-21 21:33
    VLAI
    Summary
    Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
    CWE
    • Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services.
    Assigner
    References
    Impacted products
    Vendor Product Version
    Oracle Corporation Oracle Net Services Affected: 19.3 , ≤ 19.31 (custom)
    Affected: 21.3 , ≤ 21.22 (custom)
    Affected: 23.4.0 , ≤ 23.26.2 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Oracle Net Services",
          "vendor": "Oracle Corporation",
          "versions": [
            {
              "lessThanOrEqual": "19.31",
              "status": "affected",
              "version": "19.3",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "21.22",
              "status": "affected",
              "version": "21.3",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "23.26.2",
              "status": "affected",
              "version": "23.4.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "19.31",
                  "versionStartIncluding": "19.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "21.22",
                  "versionStartIncluding": "21.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "23.26.2",
                  "versionStartIncluding": "23.4.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en-US",
          "value": "Vulnerability in the Oracle Net Services component of Oracle Database Server.  Supported versions that are affected are 19.3-19.31, 21.3-21.22 and  23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services.",
              "lang": "en-US"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T21:33:11.302Z",
        "orgId": "43595867-4340-4103-b7a2-9a5208d29a85",
        "shortName": "oracle"
      },
      "references": [
        {
          "name": "Oracle Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujul2026.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "43595867-4340-4103-b7a2-9a5208d29a85",
    "assignerShortName": "oracle",
    "cveId": "CVE-2026-47040",
    "datePublished": "2026-07-21T21:33:11.302Z",
    "dateReserved": "2026-05-18T15:55:10.318Z",
    "dateUpdated": "2026-07-21T21:33:11.302Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-47040 (GCVE-0-2026-47040)

    Vulnerability from cvelistv5 – Published: 2026-07-21 21:33 – Updated: 2026-07-21 21:33
    VLAI
    Summary
    Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
    CWE
    • Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services.
    Assigner
    References
    Impacted products
    Vendor Product Version
    Oracle Corporation Oracle Net Services Affected: 19.3 , ≤ 19.31 (custom)
    Affected: 21.3 , ≤ 21.22 (custom)
    Affected: 23.4.0 , ≤ 23.26.2 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Oracle Net Services",
          "vendor": "Oracle Corporation",
          "versions": [
            {
              "lessThanOrEqual": "19.31",
              "status": "affected",
              "version": "19.3",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "21.22",
              "status": "affected",
              "version": "21.3",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "23.26.2",
              "status": "affected",
              "version": "23.4.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "19.31",
                  "versionStartIncluding": "19.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "21.22",
                  "versionStartIncluding": "21.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "23.26.2",
                  "versionStartIncluding": "23.4.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en-US",
          "value": "Vulnerability in the Oracle Net Services component of Oracle Database Server.  Supported versions that are affected are 19.3-19.31, 21.3-21.22 and  23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services.",
              "lang": "en-US"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T21:33:11.302Z",
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      },
      "references": [
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          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujul2026.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "43595867-4340-4103-b7a2-9a5208d29a85",
    "assignerShortName": "oracle",
    "cveId": "CVE-2026-47040",
    "datePublished": "2026-07-21T21:33:11.302Z",
    "dateReserved": "2026-05-18T15:55:10.318Z",
    "dateUpdated": "2026-07-21T21:33:11.302Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}