{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Oracle Linux",
          "vendor": "Oracle Corporation",
          "versions": [
            {
              "status": "affected",
              "version": "8"
            },
            {
              "status": "affected",
              "version": "9"
            },
            {
              "status": "affected",
              "version": "10"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-16T21:36:44.856Z",
        "orgId": "43595867-4340-4103-b7a2-9a5208d29a85",
        "shortName": "oracle"
      },
      "references": [
        {
          "name": "Oracle Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://linux.oracle.com/cve/CVE-2026-21991.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "43595867-4340-4103-b7a2-9a5208d29a85",
    "assignerShortName": "oracle",
    "cveId": "CVE-2026-21991",
    "datePublished": "2026-03-16T21:36:44.856Z",
    "dateReserved": "2026-01-05T18:07:34.717Z",
    "dateUpdated": "2026-03-16T21:36:44.856Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-21991\",\"sourceIdentifier\":\"secalert_us@oracle.com\",\"published\":\"2026-03-16T22:16:18.397\",\"lastModified\":\"2026-03-16T22:16:18.397\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"secalert_us@oracle.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://linux.oracle.com/cve/CVE-2026-21991.html\",\"source\":\"secalert_us@oracle.com\"}]}}"
  }
}