CVE-2026-77480

Estado: AnalizadaAlta (8.8)—

Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.

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: 0.78%
Percentil entre todas las CVEs puntuadas: 54
Fecha de la puntuación: 5/10/2026

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 movement95 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation90 %
Impacto secundarioT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access85 %

Acceso remoto en red (AV:N) con PR:L (requiere privilegios existentes) confirma T1210. El vector I:H sustenta escalada de privilegios (T1068). CWE-1220 y descripción indican control de acceso insuficiente que permite elevar privilegios sobre la red.

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 Program Application Isolation and Sandboxing Exploit Protection Update Software Vulnerability Scanning Privileged Account Management

Tecnologías afectadas (4)

Microsoft — SQL Server 2017 Microsoft — SQL Server 2019 Microsoft — SQL Server 2022 Microsoft — SQL Server 2025

CWE

CWE-1220

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77480

JSON original (NVD)

Mostrar

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