What’s Vulnerable › Vulnerabilities

CVE-2023-35703

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-01-08 · updated 2026-06-17
• Weakness: CWE-121

Description

Multiple stack-based buffer overflow vulnerabilities exist in the FST LEB128 varint 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 fstReaderVarint64 function.

Affected products

• GTKWave: 3.3.115

References

• https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html
• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1783
• https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html
• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1783
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1783

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