CVE-2026-47040 (GCVE-0-2026-47040)
Vulnerability from cvelistv5
Published
2026-07-21 21:33
Modified
2026-07-23 15:37
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.
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).
References
Impacted products
Vendor Product Version
Oracle Corporation Oracle Net Services Version: 19.3   <
Version: 21.3   <
Version: 23.4.0   <
Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-47040",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-23T15:36:36.852864Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-306",
                "description": "CWE-306 Missing Authentication for Critical Function",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-23T15:37:04.597Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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": "2026-07-23T15:37:04.597Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-47040\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-23T15:36:36.852864Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-306\", \"description\": \"CWE-306 Missing Authentication for Critical Function\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-23T15:36:59.643Z\"}}], \"cna\": {\"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"Oracle Corporation\", \"product\": \"Oracle Net Services\", \"versions\": [{\"status\": \"affected\", \"version\": \"19.3\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"19.31\"}, {\"status\": \"affected\", \"version\": \"21.3\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"21.22\"}, {\"status\": \"affected\", \"version\": \"23.4.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"23.26.2\"}]}], \"references\": [{\"url\": \"https://www.oracle.com/security-alerts/cpujul2026.html\", \"name\": \"Oracle Advisory\", \"tags\": [\"vendor-advisory\"]}], \"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).\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"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.\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndIncluding\": \"19.31\", \"versionStartIncluding\": \"19.3\"}, {\"criteria\": \"cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndIncluding\": \"21.22\", \"versionStartIncluding\": \"21.3\"}, {\"criteria\": \"cpe:2.3:a:oracle:net_services:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndIncluding\": \"23.26.2\", \"versionStartIncluding\": \"23.4.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"43595867-4340-4103-b7a2-9a5208d29a85\", \"shortName\": \"oracle\", \"dateUpdated\": \"2026-07-21T21:33:11.302Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-47040\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-23T15:37:04.597Z\", \"dateReserved\": \"2026-05-18T15:55:10.318Z\", \"assignerOrgId\": \"43595867-4340-4103-b7a2-9a5208d29a85\", \"datePublished\": \"2026-07-21T21:33:11.302Z\", \"assignerShortName\": \"oracle\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.