Multiple improper array index validation vulnerabilities exist in the fstReaderIterBlocks2 tdelta functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the tdelta indexing when signal_lens is 2 or more. CREATE(Triage):(User=admin) CVE-2023-35997 (https://nvd.nist.gov/vuln/detail/CVE-2023-35997)