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CVE-2026-3230

Estado: AnalizadaBaja (1.2)—

Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required key_share extension, resulting in derivation of predictable traffic secrets from (EC)DHE shared secret. This issue does not affect the client's authentication of the server during TLS handshakes.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Wolfssl — Wolfssl

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-3230",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-3230",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-20T17:08:54.344097Z"
        }
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    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 2.7,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.2
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "facts@wolfssl.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "AUTOMATIC",
          "baseScore": 1.2,
          "Automatable": "YES",
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "valueDensity": "DIFFUSE",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:D/RE:X/U:Clear",
          "exploitMaturity": "PROOF_OF_CONCEPT",
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          "privilegesRequired": "HIGH",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
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          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
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  },
  "affected": [
    {
      "source": "facts@wolfssl.com",
      "affectedData": [
        {
          "repo": "https://github.com/wolfSSL/wolfssl",
          "vendor": "wolfSSL",
          "modules": [
            "wolfSSL"
          ],
          "product": "wolfSSL",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "5.9.0",
              "versionType": "semver"
            }
          ],
          "packageName": "wolfSSL",
          "programFiles": [
            "tls.c",
            "tls13.c"
          ],
          "collectionURL": "https://github.com/wolfSSL/wolfssl",
          "defaultStatus": "unaffected"
        }
      ]
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  ],
  "published": "2026-03-19T21:17:12.483",
  "references": [
    {
      "url": "https://github.com/wolfSSL/wolfssl/pull/9754",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "facts@wolfssl.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "facts@wolfssl.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required key_share extension, resulting in derivation of predictable traffic secrets from (EC)DHE shared secret. This issue does not affect the client's authentication of the server during TLS handshakes."
    },
    {
      "lang": "es",
      "value": "Falta un paso criptográfico requerido en la lógica de handshake HelloRetryRequest del cliente TLS 1.3 en wolfSSL podría llevar a un compromiso en la confidencialidad de las comunicaciones protegidas por TLS a través de un HelloRetryRequest manipulado seguido de un mensaje ServerHello que omite la extensión key_share requerida, resultando en la derivación de secretos de tráfico predecibles a partir del secreto compartido (EC)DHE. Este problema no afecta la autenticación del cliente del servidor durante los handshakes TLS."
    }
  ],
  "lastModified": "2026-06-17T10:43:15.530",
  "configurations": [
    {
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        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "DA3FA1CB-CEDC-4D49-9ECD-99BBF1602312",
              "versionEndExcluding": "5.9.0"
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          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "facts@wolfssl.com"
}