Is CVE-2023-34436 in the CISA KEV catalog?

No. CVE-2023-34436 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-34436?

CVE-2023-34436 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-34436?

CVE-2023-34436 has an EPSS score of 0.43% (35th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-34436?

Upgrade gtkwave on debian 11 to 3.3.104+really3.3.118-0+deb11u1 or later.

CVE & CISA-KEV Catalog

CVE-2023-34436

HIGH

7.8

CVSS v3

NVD

Description

An out-of-bounds write vulnerability exists in the LXT2 num_time_table_entries 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 this vulnerability.

CWE-119Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

gtkwaveDebian

Fixed in:3.3.104+really3.3.118-0+deb11u1CVE-2023-34436

Fixed in:3.3.118-0.1~deb12u1CVE-2023-34436

Fixed in:3.3.118-0.1CVE-2023-34436

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

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

0.43%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Exploit1

talosintelligence.com

Other references2

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

Embed a live status badge for CVE-2023-34436

Markdown

[![CVE-2023-34436](https://tridentstack.com/cve/badge/CVE-2023-34436.svg)](https://tridentstack.com/cve/CVE-2023-34436)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-34436"><img src="https://tridentstack.com/cve/badge/CVE-2023-34436.svg" alt="CVE-2023-34436"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2025-11-04.