CVE-2026-102551

HighCVSS 7.7/10Last modified Oct 19, 2026

Description

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.

To remediate this issue, users should upgrade to version V4.4.2.

Metrics

CVSS 3.1 7.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Weakness enumeration

CWE-940

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Oct 16, 2026
Last modified: Oct 19, 2026
NVD status: Awaiting Analysis

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