CVE-2025-66647lowCWE-120

CVE-2025-66647: fallo de gravedad baja en RIOT-OS RIOT

RIOT OS has buffer overflow in gnrc_ipv6_ext_frag_reass

Publicada el

Seguir esta CVE+ Monitorear RIOT OS

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

8Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 1.7epss 1.0%
RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things (IoT) devices and other embedded devices. A vulnerability was discovered in the IPv6 fragmentation reassembly implementation of RIOT OS v2025.07. When copying the contents of the first fragment (offset=0) into the reassembly buffer, no size check is performed. It is possible to force the creation of a small reassembly buffer by first sending a shorter fragment (also with offset=0). Overflowing the reassembly buffer corrupts the state of other packet buffers which an attacker might be able to used to achieve further memory corruption (potentially resulting in remote code execution). To trigger the vulnerability, the `gnrc_ipv6_ext_frag` module must be included and the attacker must be able to send arbitrary IPv6 packets to the victim. Version 2025.10 fixes the issue.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
Productos afectados
RIOT-OS · RIOT
CVEs relacionadas — RIOT-OS RIOT

En el mismo producto, de las más peligrosas a las menos.

CVE-2024-32017CRITICALBuffer overflows in RIOTEPSS 1.6%CVE-2024-32018HIGHIneffective size check due to assert() and buffer overflow in RIOTEPSS 1.5%CVE-2023-33975CRITICALRIOT-OS vulnerable to Out of Bounds Write in _rbuf_addEPSS 1.5%CVE-2024-31225HIGHLack of size check and buffer overflow in RIOTEPSS 1.3%CVE-2023-24818HIGHRIOT-OS vulnerable to null pointer dereference during fragment forwardingEPSS 1.2%CVE-2023-24823CRITICALRIOT-OS vulnerable to Packet Type Confusion during IPHC sendEPSS 1.0%