Security Advisory

CVE-2026-7424

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-04-29 18:51:28

Last updated 2026-04-29 22:13:39

Assigner AMZN

CVSS score 8.1

State PUBLISHED

Description

Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service (permanent IP task freeze requiring hardware reset) by sending a single crafted DHCPv6 packet. The issue is present whenever DHCPv6 is enabled. To mitigate this issue, users should upgrade to version V4.2.6 or V4.4.1 or newer.

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