CVE-2023-36861: Tonybybell Gtkwave

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An out-of-bounds write vulnerability exists in the VZT LZMA_read_varint functionality of GTKWave 3.3.115. A specially crafted .vzt file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger this vulnerability.

Affected products

• Tonybybell Gtkwave: version 3.3.115 only

Published 2024-01-08. Last modified 2026-06-17.