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

6.5MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

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

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Weaknesses

CWE-125

Affected Products

commercial·US

commercial·US

FreeRTOS-Plus-TCPEmbeddedLibrary

Cloud & SaaS

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Collection

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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 →

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