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CVE-2018-12680

Status: ModifiedHigh (7.5)—

The Serialize.deserialize() method in CoAPthon 3.1, 4.0.0, 4.0.1, and 4.0.2 mishandles certain exceptions, leading to a denial of service in applications that use this library (e.g., the standard CoAP server, CoAP client, CoAP reverse proxy, example collect CoAP server and client) when they receive crafted CoAP messages.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Coapthon Project — Coapthon

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-12680",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "NONE"
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  "affected": [
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      "affectedData": [
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  "published": "2019-04-02T20:29:00.380",
  "references": [
    {
      "url": "https://github.com/Tanganelli/CoAPthon/issues/135",
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        "Third Party Advisory"
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-502"
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      ]
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  "descriptions": [
    {
      "lang": "en",
      "value": "The Serialize.deserialize() method in CoAPthon 3.1, 4.0.0, 4.0.1, and 4.0.2 mishandles certain exceptions, leading to a denial of service in applications that use this library (e.g., the standard CoAP server, CoAP client, CoAP reverse proxy, example collect CoAP server and client) when they receive crafted CoAP messages."
    },
    {
      "lang": "es",
      "value": "El método Serialize.deserialize() en CoAPthon 3.1., 4.0.0 y 4.0.2 gestiona de manera incorrecta ciertas excepciones, conduciendo a una denegación de servicio (DoS) en aplicaciones que utilizan esta biblioteca (p. ej., el servidor CoAP estándar, el cliente CoAP, el servidor y cliente CoAP \"example collect\", el CoAP reverse proxy) cuando reciben mensajes CoAP manipulados."
    }
  ],
  "lastModified": "2026-06-17T01:38:10.160",
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