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CVE-2023-52440

Estado: ModificadaAlta (7.8)—PoC
Gravedad7.8Alta · CVSS 3.1
Probabilidad de explotación22 %mayor que el 98 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePrueba de concepto en GitHub (no verificada)

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ksmbd: corrige el desbordamiento de slub en ksmbd_decode_ntlmssp_auth_blob() Si authblob->SessionKey.Length es mayor que el tamaño de la clave de sesión (CIFS_KEY_SIZE), puede ocurrir un desbordamiento de slub en los códigos de intercambio de claves. cifs_arc4_crypt copia a la matriz de claves de sesión desde SessionKey del cliente.

CVSS

Puntuación base
7.8
Versión
3.1
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
22 %
Percentil entre todas las CVEs puntuadas
98
Fecha de la puntuación
20/10/2026

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).

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 (1)

Linux — Linux Kernel

CWE

Referencias

Mostrar las 10 referencias

JSON original (NVD)

Mostrar
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