CVE-2026-3821

Estado: Pendiente de análisisAlta (8.8)—

Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI. An authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.64%
Percentil entre todas las CVEs puntuadas: 49
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1059 Command and Scripting Interpreterexecution90 %
Impacto secundarioT1499.004 Application or System Exploitationimpact75 %

Vector CVSS con AV:N, PR:L (acceso remoto con privilegios) apunta a T1210. CWE-78 (command injection) sustenta T1059 como impacto primario. El texto menciona DoS contra BMC, justificando T1499.004 como impacto secundario.

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 Management Disable or Remove Feature or Program Vulnerability Scanning Threat Intelligence Program Restrict Web-Based Content Network Segmentation

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Supermicro — X14dbg-dap^AI Supermicro — X14dbi^AI

CWE

CWE-78

Referencias

https://www.supermicro.com/en/support/security_BMC_IPMI_Jul_2026

JSON original (NVD)

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  "id": "CVE-2026-3821",
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          "id": "CVE-2026-3821",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-07-22T12:55:41.124871Z"
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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  "affected": [
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      "source": "def9a96e-e099-41a9-bfac-30fd4f82c411",
      "affectedData": [
        {
          "vendor": "SMCI",
          "product": "X14DBG-DAP,X14DBI",
          "versions": [
            {
              "status": "affected",
              "version": "01.00.16.00"
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  "published": "2026-07-22T07:16:35.413",
  "references": [
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      "value": "Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI.\nAn authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC."
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  "lastModified": "2026-07-23T15:33:09.233",
  "sourceIdentifier": "def9a96e-e099-41a9-bfac-30fd4f82c411"
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