CVE-2026-7425 MEDIUM

CVE-2026-7425: Out-of-Bounds Read in Router Advertisement Option Parser in FreeRTOS-Plus-TCP

Vendor Aws
Product FreeRTOS-Plus-TCP
Weakness CWE-125
Published April 29, 2026
Last update April 29, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 29, 2026 CVE published
April 29, 2026 Record updated