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    CVE-2023-37577

    Multiple use-after-free vulnerabilities exist in the VCD get_vartoken realloc 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 use-after-free when triggered via the vcd2lxt2 conversion utility.

    Published:Jan 8, 2024
    Last Modified:Nov 4, 2025
    EPS:Jan 8, 2024
    EPSS Score:0.001
    CVSS Score:7.8

    Affected Products

    Vendor
    Tonybybell
    Product
    Gtkwave

    Exploits

    https://talosintelligence.com/vulnerability_reports/TALOS-2023-1806https://talosintelligence.com/vulnerability_reports/TALOS-2023-1806

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2023-32650 (CVSS 7) — An integer overflow vulnerability exists in the FST_BL_GEOM parsing maxhandle functionality of GTKWave 3.3.115…
    CVE-2023-35704 (CVSS 7.8) — Multiple stack-based buffer overflow vulnerabilities exist in the FST LEB128 varint functionality of GTKWave 3…
    CVE-2023-35703 (CVSS 7.8) — Multiple stack-based buffer overflow vulnerabilities exist in the FST LEB128 varint functionality of GTKWave 3…
    CVE-2023-35702 (CVSS 7.8) — Multiple stack-based buffer overflow vulnerabilities exist in the FST LEB128 varint functionality of GTKWave 3…
    CVE-2023-35958 (CVSS 7.8) — Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 VCDATA parsing functiona…
    CVE-2023-35957 (CVSS 7.8) — Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 VCDATA parsing functiona…
    CVE-2023-35956 (CVSS 7.8) — Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 VCDATA parsing functiona…
    CVE-2023-35955 (CVSS 7.8) — Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 VCDATA parsing functiona…
    CVE-2023-35964 (CVSS 7.8) — Multiple OS command injection vulnerabilities exist in the decompression functionality of GTKWave 3.3.115. A s…
    CVE-2023-35963 (CVSS 7.8) — Multiple OS command injection vulnerabilities exist in the decompression functionality of GTKWave 3.3.115. A s…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High