CVE-2026-47783

Estado: ModificadaAlta (8.1)—

In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.26%
Percentil entre todas las CVEs puntuadas: 69
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 access65 %
Impacto principalT1212 Exploitation for Credential Accesscredential access70 %

Memcached SASL timing side channel (CWE-208) permite extraer credenciales mediante análisis de tiempos de respuesta en autenticación. Acceso de red sin privilegios (AV:N, PR:N) sugiere T1190; impacto es acceso a credenciales (T1212).

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

Application Isolation and Sandboxing Exploit Protection Update Software Application Developer Guidance Vulnerability Scanning Threat Intelligence Program

Tecnologías afectadas (1)

Memcached — Memcached

CWE

CWE-208
CWE-208

Referencias

JSON original (NVD)

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