CVE-2020-37133 - CVE House
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Status published Medium CVE-2020-37133

UltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • chuyreds

Affected Vendor

UltraVNC Team

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Affected Software

UltraVNC Launcher
Vulnerable Versions:
1.2.4.0

Timeline

Official Publish: February 5th, 2026
Last Modified: February 5th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)