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

CVE-2025-9820

Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-121 Desbordamiendo de búfer basado en pila (Stack)
Fecha de publicación:
26/01/2026
Última modificación:
26/01/2026

Descripción

*** Pendiente de traducción *** A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.