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

CVE-2026-27703

Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-787 Escritura fuera de límites
Fecha de publicación:
11/03/2026
Última modificación:
11/03/2026

Descripción

*** Pendiente de traducción *** RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things (IoT) devices and other embedded devices. In 2026.01 and earlier, the default handler for the well_known_core resource coap_well_known_core_default_handler writes user-provided option data and other data into a fixed size buffer without validating the buffer is large enough to contain the response. This vulnerability allows an attacker to corrupt neighboring stack location, including security-sensitive addresses like the return address, leading to denial of service or arbitrary code execution.

Referencias a soluciones, herramientas e información