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CVE-2026-7425

Out-of-Bounds Read in Router Advertisement Option Parser in FreeRTOS-Plus-TCP

Published: Apr 29, 2026Updated: May 4, 2026 Sources: CVE List NVDCWE-125
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.2%
Top 86.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause a denial of service (device crash) by sending a crafted Router Advertisement with a truncated PREFIX_INFORMATION option that is smaller than the expected structure size. To mitigate this issue, users should upgrade to the fixed version when available.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-125

Affected Products

freertos-plus-tcpamazon
SaaS
Cloud & SaaS / cloud-platform
FreeRTOS-Plus-TCPAWS
Mixed
Cloud & SaaS / cloud-platform
amazoncommercialUSCloud & SaaS
awscommercialUSCloud & SaaSaka aws

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://aws.amazon.com/security/security-bulletins/2026-023-aws/
aws.amazon.com
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6
github.com
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1
github.com
and 1 more references View all →

Timeline

Published
Apr 29, 2026
Last Updated
May 4, 2026

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