Medium severity4.3NVD Advisory· Published Oct 10, 2025· Updated Jun 17, 2026

CVE-2025-11618

Description

A missing validation check in FreeRTOS-Plus-TCP's UDP/IPv6 packet processing code can lead to an invalid pointer dereference when receiving a UDP/IPv6 packet with an incorrect IP version field in the packet header. This issue only affects applications using IPv6.

We recommend upgrading to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Amazon/Freertos Plus TCP
cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*
Range: >=4.0.0,<4.3.4
FreeRTOS/Freertos Plus TCPllm-fuzzy
AWS/FreeRTOS-Plus-TCPcpe-rescue
Range: 4.0.0

Patches

Vulnerability mechanics

References

aws.amazon.com/security/security-bulletins/AWS-2025-023/nvdVendor Advisory
github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-6fh9-mqxj-hmwjnvdVendor Advisory
github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.4nvdRelease Notes

News mentions

No linked articles in our index yet.

cvss	0.280
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000