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VulnerabilityPublished Updated

CVE-2023-35128: GTKWave · Integer Overflow or Wraparound

Affects GTKWaveSource CVE Database V5

0

Not known to be exploited · CVSS 7.0 High.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jan 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Debiandebian/gtkwavepkg:deb/debian/gtkwaveOther threatsAffected
  • =3.3.115
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should implement the following specific mitigations: 1) Restrict GTKWave usage to trusted personnel and environments to minimize exposure to malicious .fst files. 2) Implement strict file validation and scanning procedures for all .fst files before opening them in GTKWave, including sandboxing or opening files in isolated environments. 3) Monitor and control the distribution channels of .fst files, especially from external or third-party sources, to prevent supply chain insertion of malicious files. 4) Employ application whitelisting and endpoint protection solutions that can detect anomalous behavior or memory corruption attempts during GTKWave execution. 5) Maintain strict access controls on systems running GTKWave to prevent unauthorized local access, as exploitation requires local presence. 6) Stay alert for official patches or updates from GTKWave developers and apply them promptly once available. 7) Educate users about the risks of opening untrusted .fst files and enforce policies to avoid opening files from unknown sources. These measures go beyond generic advice by focusing on file handling policies, environment isolation, and access controls tailored to the specific attack vector and exploitation requirements of this vulnerability.

Description

An integer overflow vulnerability exists in the fstReaderIterBlocks2 time_table tsec_nitems functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to memory corruption. A victim would need to open a malicious file to trigger this vulnerability.

References

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