CVE-2019-9495

Estado: ModificadaBaja (3.7)—
The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Puntuación base: 3.7
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 3.48%
Percentil entre todas las CVEs puntuadas: 89
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).
Tecnologías afectadas (9)

Debian — Debian Linux Fedoraproject — Fedora Freebsd — Freebsd Opensuse — Backports SLE Opensuse — Leap Synology — Radius Server Synology — Router Manager W1.fi — Hostapd W1.fi — WPA Supplicant
CWE

CWE-524
CWE-203
Referencias

JSON original (NVD)

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      "lang": "en",
      "value": "The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected."
    },
    {
      "lang": "es",
      "value": "Las implementaciones de EAP-PWD en hostapd y wpa_supplicant son vulnerables a los ataques de canal lateral (side-channel) como resultado de los patrones de acceso a la caché. Todas las versiones de hostapd y wpa_supplicant con soporte de EAP-PWD son vulnerables. La capacidad de instalar y ejecutar aplicaciones es necesaria para un ataque con exito. Los patrones de acceso a memoria son visibles en caché compartido. Las contraseñas débiles pueden ser crackeadas. Las versiones de hostapd/wpa_supplicant versión 2.7 y posteriores, no son vulnerables al ataque de tiempo descrito en CVE-2019-9494. Tanto hostapd con soporte EAP-pwd como wpa_supplicant con soporte EAP-pwd anterior y con la versión 2.7 están afectados."
    }
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  "lastModified": "2026-06-17T02:43:49.080",
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