CVE-2025-11617CWE-126

CVE-2025-11617

Medium · published October 10, 2025

CVSS v3.1
5.4
EPSS
0%
Percentile
22.1
In the wild
Unconfirmed
What it is

A missing validation check in FreeRTOS-Plus-TCP's IPv6 packet processing code can lead to an out-of-bounds read when receiving a IPv6 packet with incorrect payload lengths in the packet header. This issue only affects applications using IPv6.

We recommend users upgrade 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
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00306 · 22.1th percentile
Weakness
CWE-126 · Buffer Over-read
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-wmjr-wm93-cvv2 · ff89ba41-3aa1-4d27-914a-91399e9639e5
EPSS history
Timeline
  • 10 OCT 17:10Z
    Buffer Over-read when receiving IPv6 packets with incorrect payload length in FreeRTOS-Plus-TCP
    cvelistv5