« Volver al listado

CVE-2025-14859

Estado: Pendiente de análisisAlta (7)—

The Semtech LR11xx LoRa transceivers implement secure boot functionality using digital signatures to authenticate firmware. However, the implementation uses a non-standard cryptographic hashing algorithm that is vulnerable to second preimage attacks. An attacker with physical access to the device can exploit this weakness to generate a malicious firmware image with a hash collision, bypassing the secure boot verification mechanism and installing arbitrary unauthorized firmware on the device.

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.

AV:P (acceso físico) → T1091. Instalación de firmware malicioso bypasea secure boot → escalada de privilegios (T1068) y acceso a datos del dispositivo (T1005).

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 ProgramLimit Hardware InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or ProgramApplication 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.

Semtech — Lr11xxAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-14859",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-14859",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-07T20:31:39.343091Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security@sierrawireless.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "IRRECOVERABLE",
          "baseScore": 7,
          "Automatable": "NO",
          "attackVector": "PHYSICAL",
          "baseSeverity": "HIGH",
          "valueDensity": "CONCENTRATED",
          "vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/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:N/R:I/V:C/RE:M/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "LOW",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "LOW",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "MODERATE",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security@sierrawireless.com",
      "affectedData": [
        {
          "vendor": "Semtech",
          "modules": [
            "firmware"
          ],
          "product": "LR1110",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "BL2 FW 0x1001",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Semtech",
          "product": "LR1120",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "BL2 FW 0x2001",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Semtech",
          "product": "LR1121",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "BL2 FW 0x2101",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-04-07T20:16:22.590",
  "references": [
    {
      "url": "https://www.semtech.com/company/security/security-bulletins/sem-psa-2026-001",
      "source": "security@sierrawireless.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@sierrawireless.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-327"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Semtech LR11xx LoRa transceivers implement secure boot functionality using digital signatures to authenticate firmware. However, the implementation uses a non-standard cryptographic hashing algorithm that is vulnerable to second preimage attacks. An attacker with physical access to the device can exploit this weakness to generate a malicious firmware image with a hash collision, bypassing the secure boot verification mechanism and installing arbitrary unauthorized firmware on the device."
    },
    {
      "lang": "es",
      "value": "Los transceptores LoRa Semtech LR11xx implementan la funcionalidad de arranque seguro utilizando firmas digitales para autenticar el firmware. Sin embargo, la implementación utiliza un algoritmo de hash criptográfico no estándar que es vulnerable a ataques de segunda preimagen. Un atacante con acceso físico al dispositivo puede explotar esta debilidad para generar una imagen de firmware maliciosa con una colisión de hash, eludiendo el mecanismo de verificación de arranque seguro e instalando firmware no autorizado arbitrario en el dispositivo."
    }
  ],
  "lastModified": "2026-07-24T23:10:00.563",
  "sourceIdentifier": "security@sierrawireless.com"
}