CVE-2023-37921
HIGHDescription
Multiple arbitrary write vulnerabilities exist in the VCD sorted bsearch functionality of GTKWave 3.3.115. A specially crafted .vcd file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the arbitrary write when triggered via the vcd2vzt conversion utility.
How to fix
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 37% of all known CVEs.
References
Related Vulnerabilities
Other CWE-118 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2015-2002 | Critical | 9.8 | 2.3% | - | Fix |
| CVE-2017-5884 | High | 7.8 | 2.2% | - | Fix |
| CVE-2015-2004 | Critical | 9.8 | 2.0% | - | Fix |
| CVE-2015-2003 | Critical | 9.8 | 2.0% | - | Fix |
| CVE-2015-2001 | Critical | 9.8 | 2.0% | - | Fix |
| CVE-2015-2000 | Critical | 9.8 | 2.0% | - | Fix |
Common questions
How do I fix CVE-2023-37921?
Upgrade gtkwave on debian 12 to 3.3.118-0.1~deb12u1 or later.
Is CVE-2023-37921 being actively exploited?
Not that we know of. CVE-2023-37921 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.43% is the estimated probability that it will be exploited in the next 30 days. That is higher than 37% of all scored CVEs.
How severe is CVE-2023-37921?
CVE-2023-37921 has a CVSS v3 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2023-37921 affect?
Published advisories record a fix for gtkwave (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.