TI-2023-20578 Aliases CVE-2023-39443 GHSA-655f-j2cx-ww9q

Memory corruption in GTKWave

HIGH 69CWE-119Published 2024-01-08 · Updated 2025-11-04

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Multiple out-of-bounds write vulnerabilities exist in the LXT2 parsing functionality of GTKWave 3.3.115. A specially-crafted .lxt2 file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the out-of-bounds write perfomed by the prefix copy loop.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00432 37th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GTKWave	GTKWave	3.3.115	—	No fix listed	CNA

GTKWave VendorGTKWave Affected 3.3.115 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:tonybybell:gtkwave:3.3.115:::::::*	3.3.115	Vulnerable	GTKWave

cpe:2.3:a:tonybybell:gtkwave:3.3.115:*:*:*:*:*:*:* Versions 3.3.115 Vulnerable ·GTKWave

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2023-39443
2026-10-03 Alias added: GHSA-655f-j2cx-ww9q

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2023-1826

Other 1

https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html

TI-2023-20579 Memory corruption in GTKWave CVSS 3.1HIGH 7.8
TI-2023-20417 Integer overflow in GTKWave CVSS 3.1HIGH 7.8
TI-2023-20006 Memory corruption in GTKWave CVSS 3.1HIGH 7.8
TI-2023-20005 Memory corruption in GTKWave CVSS 3.1HIGH 7.8
TI-2023-19994 Integer overflow in GTKWave CVSS 3.1HIGH 7.8
TI-2023-19993 Integer overflow in GTKWave CVSS 3.1HIGH 7.8

See all 81 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences