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    3 vulnerabilities by UltraVNC Team

    CVE-2020-37134 (GCVE-0-2020-37134)

    Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-03-05 01:28
    VLAI
    Title
    UltraVNC Viewer 1.2.4.0 - 'VNCServer' Denial of Service
    Summary
    UltraVNC Viewer 1.2.4.0 contains a denial of service vulnerability that allows attackers to crash the application by manipulating VNC Server input. Attackers can generate a malformed 256-byte payload and paste it into the VNC Server connection dialog to trigger an application crash.
    Severity
    4.6 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Date Public
    2020-04-05 00:00
    Credits
    chuyreds
    Show details on NVD website
    To clipboard 

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    CVE-2020-37133 (GCVE-0-2020-37133)

    Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 18:44
    VLAI
    Title
    UltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service
    Summary
    UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allows attackers to crash the application. Attackers can paste an overly long string of 300 characters into the Repeater Host property to trigger an application crash.
    Severity
    6.7 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    Impacted products
    Date Public
    2020-04-05 00:00
    Credits
    chuyreds
    Show details on NVD website
    To clipboard 

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    CVE-2020-37132 (GCVE-0-2020-37132)

    Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 18:44
    VLAI
    Title
    UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service
    Summary
    UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. Attackers can paste an overly long 300-character string into the password field to trigger an application crash and prevent normal launcher functionality.
    Severity
    6.7 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    6.2 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    Impacted products
    Date Public
    2020-04-05 00:00
    Credits
    chuyreds
    Show details on NVD website
    To clipboard 

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