CVE-2020-37132

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. Attackers can paste an overly long 300-character string into the password field to trigger an application crash and prevent normal launcher functionality.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/48290	Exploit Third Party Advisory VDB Entry
https://www.uvnc.com/	Product
https://www.vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*

History

17 Jun 2026, 03:17

Type	Values Removed	Values Added
Summary		(es) UltraVNC Launcher 1.2.4.0 contiene una vulnerabilidad de denegación de servicio en sus propiedades de configuración de contraseña que permite a atacantes locales bloquear la aplicación. Los atacantes pueden pegar una cadena excesivamente larga de 300 caracteres en el campo de contraseña para provocar un bloqueo de la aplicación y evitar la funcionalidad normal del lanzador.

09 Feb 2026, 22:08

Type	Values Removed	Values Added
CPE		cpe:2.3:a:uvnc:ultravnc::::::::
First Time		Uvnc ultravnc Uvnc
CWE		CWE-787
References	~~() https://www.exploit-db.com/exploits/48290 -~~	() https://www.exploit-db.com/exploits/48290 - Exploit, Third Party Advisory, VDB Entry
References	~~() https://www.uvnc.com/ -~~	() https://www.uvnc.com/ - Product
References	~~() https://www.vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service -~~	() https://www.vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service - Third Party Advisory

05 Feb 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-05 17:16

Updated : 2026-06-17 03:17

NVD link : CVE-2020-37132

Mitre link : CVE-2020-37132

CVE.ORG link : CVE-2020-37132

JSON object : View

Products Affected

uvnc

ultravnc

CWE

CWE-121

Stack-based Buffer Overflow

CWE-787

Out-of-bounds Write

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