CVE-2020-37133

7.5 HIGH
Published: February 05, 2026 Modified: February 09, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.exploit-db.com/exploits/48288
Source: disclosure@vulncheck.com
Exploit Third Party Advisory VDB Entry
https://www.uvnc.com/
Source: disclosure@vulncheck.com
Product
https://www.vulncheck.com/advisories/ultravnc-launcher-repeaterhost-denial-of-service
Source: disclosure@vulncheck.com
Third Party Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.0%
3th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-121 CWE-787

Affected Vendors

uvnc

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