CVE-2026-0625

Gravedad CVSS v4.0:

CRÍTICA

Tipo:

CWE-306 Ausencia de autenticación para una función crítica

Fecha de publicación:

05/01/2026

Última modificación:

08/01/2026

Descripción

*** Pendiente de traducción *** Multiple D-Link DSL/DIR/DNS devices contain an authentication bypass and improper access control vulnerability in the dnscfg.cgi endpoint that allows an unauthenticated attacker to access DNS configuration functionality. By directly requesting this endpoint, an attacker can modify the device’s DNS settings without valid credentials, enabling DNS hijacking (“DNSChanger”) attacks that redirect user traffic to attacker-controlled infrastructure. In 2019, D-Link reported that this behavior was leveraged by the "GhostDNS" malware ecosystem targeting consumer and carrier routers. All impacted products were subsequently designated end-of-life/end-of-service, and no longer receive security updates. Exploitation evidence was observed by the Shadowserver Foundation on 2025-11-27 (UTC).

Impacto

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A CVSS v4.0 Severidad y Métricas:

Puntuación base: 9.30 CRÍTICA
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A

Vector de acceso (AV): A través de red
Complejidad de acceso (AC): Bajo
Attack Requirements (AT): Ninguno
Privilegios Requeridos (PR): Ninguno
Interacción del usuario (UI): Ninguno
Confidentiality (VC): Alto
Integrity (VI): Alto
Availability (VA): Alto
Confidentiality (SC): Ninguno
Integrity (SI): Ninguno
Availability (SA): Ninguno
Exploit Maturity (E): Attacked

Puntuación base 4.0

9.30

Gravedad 4.0

CRÍTICA

CVE-2026-0625

Descripción

Impacto

Referencias a soluciones, herramientas e información