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CVE-2026-5194

Estado: ModificadaCrítica (9.3)—

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication if the public CA key used is also known. This affects ECDSA/ECC verification when EdDSA or ML-DSA is also enabled.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS con AV:N, PR:L permite explotación remota desde red por usuario autenticado (T1210). Aceptación de digests débiles en ECDSA compromete verificación de certificados, facilitando ataque de intermediario (T1557) o escalada si la CA privada es comprometida (T1068). CWE-295 de validación crip

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramNetwork SegmentationDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Wolfssl — Wolfssl

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-5194",
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          "options": [
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              "exploitation": "none"
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            },
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-04-21T00:00:00+00:00"
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        "source": "nvd@nist.gov",
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          "integrityImpact": "HIGH",
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        "type": "Secondary",
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          "valueDensity": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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            "wolfcrypt/src/ecc.c"
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  "published": "2026-04-09T20:16:28.420",
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      "url": "https://github.com/wolfSSL/wolfssl/pull/10131",
      "tags": [
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      "source": "facts@wolfssl.com"
    },
    {
      "url": "https://www.anthropic.com/research/glasswing-initial-update",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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        }
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      "lang": "en",
      "value": "Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication if the public CA key used is also known. This affects ECDSA/ECC verification when EdDSA or ML-DSA is also enabled."
    }
  ],
  "lastModified": "2026-06-17T10:58:35.180",
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}