Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-42012

Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-295 Validación incorrecta de certificados
Fecha de publicación:
26/05/2026
Última modificación:
26/05/2026

Descripción

*** Pendiente de traducción *** A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.