CVE-2026-34232

{
  "id": "CVE-2026-34232",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-17T20:16:34.977",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14."
    },
    {
      "lang": "es",
      "value": "Firebird es un sistema de gestión de bases de datos relacionales de código abierto. En versiones anteriores a la 5.0.4, 4.0.7 y 3.0.14, la función xdr_status_vector() no maneja el tipo isc_arg_cstring al decodificar un paquete op_response, causando una caída del servidor cuando se encuentra uno en el vector de estado. Un atacante no autenticado puede explotar esto enviando un paquete op_response manipulado al servidor. Este problema ha sido solucionado en las versiones 5.0.4, 4.0.7 y 3.0.14."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "FirebirdSQL",
          "product": "firebird",
          "versions": [
            {
              "version": ">= 3.0.0, < 3.0.14",
              "status": "affected"
            },
            {
              "version": ">= 4.0.0, < 4.0.7",
              "status": "affected"
            },
            {
              "version": ">= 5.0.0, < 5.0.4",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-20T13:42:40.302937Z",
          "id": "CVE-2026-34232",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-228"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "3.0.0",
              "versionEndExcluding": "3.0.14",
              "matchCriteriaId": "9A79C5C5-09BC-4F38-8B00-F643818CC87D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.0.0",
              "versionEndExcluding": "4.0.7",
              "matchCriteriaId": "A4BC24D2-FBF7-4308-9914-6079DBDF88FA"
            },
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              "criteria": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "938978A3-90BE-4223-BDFC-5310A7C78D9B"
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  ],
  "references": [
    {
      "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}