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CVE-2019-1040

Estado: ModificadaMedia (5.3)—💥 PoC

Existe una vulnerabilidad de manipulación indebida en Microsoft Windows cuando un atacante de tipo hombre en el medio (man-in-the-middle) puede omitir con éxito la protección NTLM MIC (Comprobación de integridad del mensaje), también se conoce como "Windows NTLM Tampering Vulnerability".

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (8)

CWE

Referencias

JSON original (NVD)

Mostrar
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  "published": "2019-06-12T14:29:03.713",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1040",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1040",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection. An attacker who successfully exploited this vulnerability could gain the ability to downgrade NTLM security features.\nTo exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. The attacker could then modify flags of the NTLM packet without invalidating the signature.\nThe update addresses the vulnerability by hardening NTLM MIC protection on the server-side."
    },
    {
      "lang": "es",
      "value": "Existe  una vulnerabilidad de manipulación indebida en Microsoft Windows cuando un atacante de tipo hombre en el medio (man-in-the-middle) puede omitir con éxito la protección NTLM MIC (Comprobación de integridad del mensaje), también se conoce como \"Windows NTLM Tampering Vulnerability\"."
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  "lastModified": "2026-06-17T02:27:40.310",
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}