{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:nds-association:zserio:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.18.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c82ea940ec2daae371328bcd9eedd07953b9a7e3"
            }
          ],
          "repo": "https://github.com/ndsev/zserio",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-cwq5-8pvq-j65j"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33524.json"
  },
  "details": "Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, a crafted payload as small as 4-5 bytes can force memory allocations of up to 16 GB, crashing any process with an OOM error (Denial of Service). This vulnerability is fixed in 2.18.1.",
  "id": "CVE-2026-33524",
  "modified": "2026-07-08T05:37:07.069262600Z",
  "published": "2026-04-24T18:18:02.913Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33524.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33524"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Zserio: Integer Overflow in BitStreamReader and Unbounded Memory Allocation in Deserialization"
}