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CVE-2026-34875

Estado: AnalizadaCrítica (9.8)—

An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.

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.

Buffer overflow en exportación de claves públicas FFDH (CWE-120) en servicio expuesto remotamente (AV:N, PR:N, UI:N). Permite ejecución de código arbitrario (I:H, C:H) con potencial escalada de privilegios en servicios criptográficos.

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

Privileged Account ManagementExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability Scanning

Tecnologías afectadas (2)

Trustedfirmware — Mbed TLSTrustedfirmware — Tf-psa-crypto

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-34875",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2026-34875",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
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              "automatable": "yes"
            },
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              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-01T18:28:31.287047Z"
        }
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          "version": "3.1",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
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  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
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      ]
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  ],
  "published": "2026-04-01T18:16:31.433",
  "references": [
    {
      "url": "https://mbed-tls.readthedocs.io/en/latest/security-advisories/",
      "tags": [
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      ],
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    },
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      "value": "An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys."
    }
  ],
  "lastModified": "2026-06-17T10:39:46.523",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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