How severe is CVE-2023-35969?

CVE-2023-35969 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-35969 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35969?

CVE-2023-35969 affects Tonybybell Gtkwave. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-35969?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-35969 have an EU (EUVD) identifier?

Yes. CVE-2023-35969 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-39953.

When was CVE-2023-35969 published?

CVE-2023-35969 was published on 2024-01-08 and last updated on 2026-06-17.

CVE-2023-35969

CVE-2023-35969 is a high-severity vulnerability in Tonybybell Gtkwave with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-39953
Weakness: CWE-787
Affected product: Tonybybell Gtkwave
Published: 2024-01-08
Last modified: 2026-06-17

Description

Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 chain_table parsing 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 chain_table of `FST_BL_VCDATA` and `FST_BL_VCDATA_DYN_ALIAS` section types.

Frequently asked questions

What is CVE-2023-35969?: Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 chain_table parsing 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 chain_table of `FST_BL_VCDATA` and `FST_BL_VCDATA_DYN_ALIAS` section types.
How severe is CVE-2023-35969?: CVE-2023-35969 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-35969 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35969?: CVE-2023-35969 affects Tonybybell Gtkwave. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-35969?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-35969 have an EU (EUVD) identifier?: Yes. CVE-2023-35969 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-39953.
When was CVE-2023-35969 published?: CVE-2023-35969 was published on 2024-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tonybybell:gtkwave:3.3.115:*:*:*:*:*:*:*

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