Realvnc · Ultravnc Launcher · CVE-2020-37133
**Name of the Vulnerable Software and Affected Versions**
UltraVNC Launcher version 1.2.4.0
**Description**
The software contains a denial of service issue in the Repeater Host configuration field. An attacker can cause the application to crash by providing an overly long string, specifically 300 characters, to the Repeater Host property. The vulnerable configuration field is the `RepeaterHost` property.
**Recommendations**
Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, avoid using or limit the length of input in the `RepeaterHost` property.