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3 vulnerabilities by UltraVNC Team

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
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
UltraVNC Team UltraVNC Launcher Affected: 1.2.4.0
Create a notification for this product.
Credits
chuyreds
Show details on NVD website
To clipboard 

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

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 18:43
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
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
UltraVNC Team UltraVNC Viewer Affected: 1.2.4.0
Create a notification for this product.
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
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
UltraVNC Team UltraVNC Launcher Affected: 1.2.4.0
Create a notification for this product.
Credits
chuyreds
Show details on NVD website
To clipboard 

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