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CVE-2026-74222

Estado: Pendiente de análisisAlta (8.8)—

U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation. When HTTP data storage fails, the callback frees the connection PCB but returns ERR_BUF instead of ERR_ABRT, causing the TCP input path to access released memory and crash the bootloader.

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.

U-Boot expuesto en red (AV:N, PR:N, UI:N) mediante lwIP HTTP, causando crash al acceder a memoria liberada (DoS). CWE-416 (use-after-free) típicamente causa denegación de servicio.

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

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

Denx — U-bootAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-74222",
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          "id": "CVE-2026-74222",
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          "options": [
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              "exploitation": "none"
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              "automatable": "yes"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-10-02T12:30:06.763319Z"
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      }
    ],
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          "vendor": "u-boot",
          "product": "u-boot",
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              "version": "0",
              "lessThan": "2026.10-rc5",
              "versionType": "custom"
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  "published": "2026-09-29T22:18:33.660",
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      "source": "disclosure@vulncheck.com"
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    {
      "url": "https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194",
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      "lang": "en",
      "value": "U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation. When HTTP data storage fails, the callback frees the connection PCB but returns ERR_BUF instead of ERR_ABRT, causing the TCP input path to access released memory and crash the bootloader."
    }
  ],
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  "sourceIdentifier": "disclosure@vulncheck.com"
}