CVE-2026-102552

CVE-2026-102552 · Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device's DNS cache via a forged DNS reply. To remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP.

CVSS 8.2 · High · EPSS 0.2%

Published: 2026-10-16T17:28:47.578Z
Updated: 2026-10-19T12:54:33.789Z

Affected products and versions

freertos-plus-tcp
Versions
- ≥ 0, ≤ 4.4.1: Affected (custom)
No fix published

Original sources

https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2
https://aws.amazon.com/security/security-bulletins/2026-139-aws/
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-h4fw-pv82-p7h5
https://nvd.nist.gov/vuln/detail/CVE-2026-102552

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CVE-2026-102552 · Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver

Affected products and versions

freertos-plus-tcp

Original sources