Medium 5.4Published Oct 10, 2025

CVE-2025-11616Buffer Over-read when receiving improperly sized ICMPv6 packets in FreeRTOS-Plus-TCP

Updated under an hour ago (Oct 28, 2026, 6:40 AM ET)

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It affects AWS FreeRTOS-Plus_TCP and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for AWS FreeRTOS-Plus_TCP

Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Weakness (CWE): CWE-126
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: AMZN
NVD analysis: Analyzed
Record last updated: Oct 10, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

AWS FreeRTOS-Plus_TCP aws:freertos_plus_tcp (from the name)	from 4.0.0 before 4.3.4	CNA record
amazon freertos-plus-tcp amazon:freertos-plus-tcp	from 4.0.0 before 4.3.4	NVD

References

References

https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.4	patch, product, release-notes
https://aws.amazon.com/security/security-bulletins/AWS-2025-023/	vendor-advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-8j9h-xjm9-8j6j	third-party-advisory, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.