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CVE-2026-20803

Estado: AnalizadaAlta (7.2)—

Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.

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:N, PR:H, acceso remoto con privilegios de cuenta válida → T1210. Falta autenticación en función crítica permite escalada de privilegios a través de la red, impactando T1078 (acceso con cuenta elevada) y T1068 (escalada de privilegios remota).

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 ProgramPrivileged Account ManagementApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer Guidance

Tecnologías afectadas (2)

Microsoft — SQL Server 2022Microsoft — SQL Server 2025

CWE

Referencias

JSON original (NVD)

Mostrar
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