CVE-2026-62898

Estado: AnalizadaAlta (7.5)—

Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.03%
Percentil entre todas las CVEs puntuadas: 62
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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access92 %
Impacto principalT1005 Data from Local Systemcollection85 %

AV:N/PR:N/UI:N indica red sin privilegios (T1190). CWE-416 (use-after-free) en QUIC permite lectura de memoria remota, confidencialidad alta (C:H). No hay evidencia de ejecución de comandos.

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

Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Filter Network Traffic Application Isolation and Sandboxing

Tecnologías afectadas (3)

Microsoft — .net Microsoft — Visual Studio 2022 Microsoft — Visual Studio 2026

CWE

CWE-416

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898

JSON original (NVD)

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