CVE-2025-11616: freertos-plus-tcp — Fix

Description

A missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds read when receiving ICMPv6 packets of certain message types which are smaller than the expected size. These issues only affect applications using IPv6. Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-126 CWE-126

Affected Products

Vendor	Product	Versions
amazon	freertos-plus-tcp	4.0.0 — 4.3.4

References

Advisories & Patches

https://aws.amazon.com/security/security-bulletins/AWS-2025-023/ https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-8j9h-xjm9-8j6j

Other References

https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.4

Frequently Asked Questions

What is CVE-2025-11616? +

A missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds read when receiving ICMPv6 packets of certain message types which are smaller than the expected size. These issues only affect applications using IPv6. Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-11616? +

CVE-2025-11616 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-11616? +

CVE-2025-11616 affects products from amazon, specifically: freertos-plus-tcp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-11616? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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