cvedb.io
CVE-2026-7426
HIGH · CVSS 8.1
EPSS exploitation probability: 0%
Published 2026-04-29T20:16:32.143 · Last modified 2026-06-17T11:02:25.223

Summary

Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid length, resulting in a heap buffer overflow. Users processing IPv4 RA only are not impacted. To mitigate this issue, users should upgrade to the fixed version when available.

Affected products

amazon — freertos-plus-tcp

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.