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CVE-2026-7426

HIGH

8.1

Descripcion

Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid length, resulting in a heap buffer overflow. Users processing IPv4 RA only are not impacted. To mitigate this issue, users should upgrade to the fixed version when available.

Detalles CVE

Puntuacion CVSS v3.18.1

SeveridadHIGH

Vector CVSSCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Vector de ataqueADJACENT_NETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado4/29/2026

Ultima modificacion4/30/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-787

Referencias

https://aws.amazon.com/security/security-bulletins/2026-023-aws/(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-97qg-4359-xm3x(ff89ba41-3aa1-4d27-914a-91399e9639e5)

Correlaciones IOC

Sin correlaciones registradas

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