CVE-2020-37133

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/5/2026

Last Modified2/9/2026

Sourcenvd

Honeypot Sightings0

Affected Products

uvnc:ultravnc

Weaknesses (CWE)

CWE-121CWE-787

References

https://www.exploit-db.com/exploits/48288(disclosure@vulncheck.com)

https://www.uvnc.com/(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/ultravnc-launcher-repeaterhost-denial-of-service(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.