CVE-2021-34940

CVE-2021-34940 is a remote code execution vulnerability affecting Bentley View 10.15.0.75 and Bentley MicroStation, stemming from a write-past-end-of-buffer error during JT file parsing. This high-severity vulnerability (CVSS 7.8) requires user interaction, where a victim must open a specially crafted malicious JT file, allowing an attacker to execute code in the context of the current process. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.