CVE-2017-2789

CVE-2017-2789 is a critical heap-based buffer overflow vulnerability affecting JustSystems Ichitaro Office 2016 Trial. It occurs when the application attempts to copy file data into a buffer, miscalculating the data size and leading to an overflow that corrupts heap offsets. This flaw has a CVSS score of 9.8, indicating a critical severity with a network attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the vulnerability's high FAUCET Risk Score of 81/100 warrants attention.