CVE-2026-7426 Out-of-Bounds Write via Unsanitized Prefix Length in Router Advertisement Processing in FreeRTOS-Plus-TCP

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...

CVE-2026-7426

The CVE-2026-7426 entry concerns the IPv6 Router Advertisement handling in FreeRTOS-Plus-TCP. Insufficient validation of the prefix length field in Router Advertisement processing allows memory corruption (heap buffer overflow) on the affected stack when processing RA messages. Affected versions ...