CVE-2026-7425

EUVD-2026-26283
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 6%
Affected Products (NVD)
VendorProductVersion
amazonfreertos-plus-tcp
4.0.0 ≤
𝑥
< 4.2.6
amazonfreertos-plus-tcp
4.3.0 ≤
𝑥
< 4.4.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://aws.amazon.com/security/security-bulletins/2026-023-aws/
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-gffr-xgjg-jh9j