Description

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.

INFO

Published Date :

2026-02-05T16:13:36.934Z

Last Modified :

2026-03-05T01:28:08.821Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2020-37134 vulnerability.

Vendors Products
Ultravnc
  • Ultravnc
  • Vnc Viewer
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2020-37134.

URL Resource
https://www.exploit-db.com/exploits/48291 cve-icon cve-icon
https://www.uvnc.com/ cve-icon cve-icon
https://www.vulncheck.com/advisories/ultravnc-viewer-vncserver-denial-of-service cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact