CVE-2026-33524

{
  "id": "CVE-2026-33524",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-24T19:17:09.850",
  "lastModified": "2026-10-26T00:10:00.150",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Zserio es un framework para serializar datos estructurados de forma compacta y eficiente con baja sobrecarga. Antes de 2.18.1, una carga útil manipulada de tan solo 4-5 bytes puede forzar asignaciones de memoria de hasta 16 GB, provocando la caída de cualquier proceso con un error OOM (Denegación de servicio). Esta vulnerabilidad está corregida en 2.18.1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ndsev",
          "product": "zserio",
          "versions": [
            {
              "version": "< 2.18.1",
              "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": "2026-04-27T13:20:21.391216Z",
          "id": "CVE-2026-33524",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:nds-association:zserio:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.18.1",
              "matchCriteriaId": "5488B9D1-04B2-459B-BE23-2FF4A91D12CF"
            }
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  ],
  "references": [
    {
      "url": "https://github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65j",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}