CVE-2025-11618CWE-476

CVE-2025-11618

Medium · published October 10, 2025

CVSS v3.1
4.3
EPSS
0%
Percentile
26.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00338 · 26.0th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2025-10-10T22:15Z
Affected products (1)
ProductVersionsFixed in
amazon/freertos-plus-tcp≥ 4.0.0, < 4.3.44.3.4
References (3)
https://aws.amazon.com/security/security-bulletins/AWS-2025-023/ · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.4 · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-6fh9-mqxj-hmwj · ff89ba41-3aa1-4d27-914a-91399e9639e5
EPSS history
Timeline
  • 10 OCT 17:10Z
    Invalid Pointer Dereference when receiving UDP/IPv6 packets in FreeRTOS-Plus-TCP
    cvelistv5