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.
"}],"value":"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.\n\n\n\nTo mitigate this issue, users should upgrade to the fixed version when available."}],"impacts":[{"capecId":"CAPEC-153","descriptions":[{"lang":"en","value":"CAPEC-153: Input Data 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Read in Router Advertisement Option Parser in Free","CVE":"CVE-2026-7425","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"7425","Ordinal":"1","NoteData":"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.\n\n\n\nTo mitigate this issue, users should upgrade to the fixed version when available.","Type":"Description","Title":"Out-of-Bounds Read in Router Advertisement Option Parser in Free"}]}}}