Heap-based Buffer Overflow Vulnerability in HiRDB

{
  "id": "25e66c0b36f48ae9cb215ef0a8b62a357be78ac33253538370bff07c8bb6aca5",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-82120",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-based Buffer Overflow Vulnerability in HiRDB",
    "summary": "Heap-based Buffer Overflow Vulnerability in HiRDB. This issue affects HiRDB Server Version 10: from 10-00 before 10-12-01; HiRDB Server Version 9: from 09-00 through 09-66-22; HiRDB Server with Additional Function Version 9: from 09-00 through 09-66/V; HiRDB Server Version 9(32): from 09-02 through 09-66-22; HiRDB Server with Additional Function Version 9(32): from 09-00 through 09-66-/V.",
    "evidence": "cve:CVE-2026-82120",
    "products": [
      {
        "name": {
          "value": "HiRDB Server Version 10",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "HiRDB Server Version 9",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "HiRDB Server with Additional Function Version 9",
          "evidence": "/containers/cna/affected/2/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "HiRDB Server Version 9(32)",
          "evidence": "/containers/cna/affected/3/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "HiRDB Server with Additional Function Version 9(32)",
          "evidence": "/containers/cna/affected/4/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-82120",
      "aliases": [
        "CVE-2026-82120"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 9.8,
            "attackVector": "NETWORK",
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "integrityImpact": "HIGH",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Hitachi",
          "product": "HiRDB Server Version 10",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "10-12-01",
                  "status": "unaffected"
                },
                {
                  "at": "10-11-02",
                  "status": "unaffected"
                },
                {
                  "at": "10-08-05",
                  "status": "unaffected"
                }
              ],
              "version": "10-00",
              "lessThan": "10-12-01",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Hitachi",
          "product": "HiRDB Server Version 9",
          "versions": [
            {
              "status": "affected",
              "version": "09-00",
              "versionType": "custom",
              "lessThanOrEqual": "09-66-22"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Hitachi",
          "product": "HiRDB Server with Additional Function Version 9",
          "versions": [
            {
              "status": "affected",
              "version": "09-00",
              "versionType": "custom",
              "lessThanOrEqual": "09-66/V"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Hitachi",
          "product": "HiRDB Server Version 9(32)",
          "versions": [
            {
              "status": "affected",
              "version": "09-02",
              "versionType": "custom",
              "lessThanOrEqual": "09-66-22"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Hitachi",
          "product": "HiRDB Server with Additional Function Version 9(32)",
          "versions": [
            {
              "status": "affected",
              "version": "09-00",
              "versionType": "custom",
              "lessThanOrEqual": "09-66-/V"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-27T09:37:23.382Z",
      "provider": "cve",
      "references": [
        "https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-147/index.html"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "50d0f415-c707-4733-9afc-8f6c0e9b3f82",
          "shortName": "Hitachi",
          "dateUpdated": "2026-10-27T09:37:23.382Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-82120",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 391572,
  "published_at": "2026-10-27T09:37:23.382+00:00"
}