An improper array index validation vulnerability exists in the EVCD var len parsing functionality of GTKWave 3.3.115. A specially crafted .evcd file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger this vulnerability.

An integer overflow vulnerability exists in the FST_BL_GEOM parsing maxhandle functionality of GTKWave 3.3.115, when compiled as a 32-bit binary. A specially crafted .fst file can lead to memory corruption. A victim would need to open a malicious file to trigger this vulnerability.