CVE-2023-36864 Integer overflow in GTKWave

High 7.8 Published 8 Jan 2024 Updated 4 Nov 2025

An attacker can execute arbitrary code by tricking a user into opening a malicious .fst file in GTKWave.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2023-36864?

CVE-2023-36864 is a high-severity vulnerability in Tonybybell Gtkwave, published on 8 Jan 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An integer overflow vulnerability exists in the fstReaderIterBlocks2 temp_signal_value_buf allocation 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 this vulnerability.

Weakness: CWE-190

Which versions are affected by CVE-2023-36864?

It affects 1 product.

Products include Tonybybell Gtkwave.

How do I fix CVE-2023-36864?

Apply the vendor's patch.

Is CVE-2023-36864 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-36864 exists.

All Tonybybell Gtkwave vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-36864, GHSA-8vjg-qcpg-mp3p, UBUNTU-CVE-2023-36864.