CVE-2026-7425

Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause a denial of service (device crash) by sending a crafted Router Advertisement with a truncated PREFIX_INFORMATION option that is smaller than the expected structure size. To mitigate this issue, users should upgrade to the fixed version when available.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-023-aws/	Vendor Advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6	Release Notes
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1	Release Notes
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-gffr-xgjg-jh9j	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:amazon:freertos-plus-tcp::::::::
	cpe:2.3:a:amazon:freertos-plus-tcp::::::::

History

26 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Validación insuficiente de la longitud de la opción en el analizador de anuncios de router IPv6 en FreeRTOS-Plus-TCP anterior a las versiones V4.2.6 y V4.4.1 permite a un actor de red adyacente causar una denegación de servicio (caída del dispositivo) enviando un anuncio de router manipulado con una opción PREFIX_INFORMATION truncada que es más pequeña que el tamaño de estructura esperado. Para mitigar este problema, los usuarios deberían actualizar a la versión corregida cuando esté disponible.

Information

Published : 2026-04-29 20:16

Updated : 2026-10-26 20:10

NVD link : CVE-2026-7425

Mitre link : CVE-2026-7425

CVE.ORG link : CVE-2026-7425

JSON object : View

Products Affected

amazon

freertos-plus-tcp

CWE

CWE-125

Out-of-bounds Read

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