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CVE-2025-11618

Invalid Pointer Dereference when receiving UDP/IPv6 packets in FreeRTOS-Plus-TCP

Published: Oct 10, 2025Updated: Oct 31, 2025 Sources: CVE List NVD BDUCWE-476
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.3%
Top 77.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-476

Affected Products

freertos-plus-tcpamazon
SaaS
Cloud & SaaS / cloud-platform
FreeRTOS Plus TCPAmazon Web Services, Inc.
Mixed
Cloud & SaaS / cloud-platform
FreeRTOS-Plus-TCPAWS
Mixed
Cloud & SaaS / cloud-platform
amazoncommercialUSCloud & SaaS
amazon web services, inc.commercialUSCloud & SaaSaka freertos, freertos plus tcp, aws vpn client
awscommercialUSCloud & SaaSaka aws

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://aws.amazon.com/security/security-bulletins/AWS-2025-023/
aws.amazon.com
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.4
github.com
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-6fh9-mqxj-hmwj
github.com
and 1 more references View all →

Timeline

Published
Oct 10, 2025
Last Updated
Oct 31, 2025

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