{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "firebird",
          "vendor": "FirebirdSQL",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.0.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 4.0.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.0.4"
            }
          ]
        }
      ],
      "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 sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-369",
              "description": "CWE-369: Divide By Zero",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-17T18:59:23.663Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6"
        },
        {
          "name": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14"
        },
        {
          "name": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7"
        },
        {
          "name": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"
        }
      ],
      "source": {
        "advisory": "GHSA-g99w-prq5-29c6",
        "discovery": "UNKNOWN"
      },
      "title": "Firebird: DoS via malicious slice descriptor in slice packet"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-35215",
    "datePublished": "2026-04-17T18:59:23.663Z",
    "dateReserved": "2026-04-01T18:48:58.937Z",
    "dateUpdated": "2026-04-17T18:59:23.663Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-35215\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-04-17T20:16:35.240\",\"lastModified\":\"2026-04-17T20:16:35.240\",\"vulnStatus\":\"Received\",\"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 sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"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}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-369\"}]}],\"references\":[{\"url\":\"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}