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CVE-2020-37132— UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service

Quick assessment

Affected
UltraVNC Team UltraVNC Launcher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

UltraVNC Launcher是UltraVNC公司的一个远程控制软件中的启动器。 UltraVNC Launcher 1.2.4.0版本存在安全漏洞，该漏洞源于密码配置属性处理不当，可能导致应用程序崩溃。

CVSS 6.2 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-37132

Vulnerability Information
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Vulnerability Title
UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
UltraVNC Launcher 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
UltraVNC Launcher是UltraVNC公司的一个远程控制软件中的启动器。 UltraVNC Launcher 1.2.4.0版本存在安全漏洞，该漏洞源于密码配置属性处理不当，可能导致应用程序崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
UltraVNC Team UltraVNC Launcher 1.2.4.0 -

II. Public POCs for CVE-2020-37132

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III. Intelligence Information for CVE-2020-37132

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Exploits & Public PoCs for CVE-2020-37132 (1)

Same Patch Batch · UltraVNC Team · 2026-02-05 · 3 CVEs total

CVE-2020-37133 7.5 HIGH UltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service
CVE-2020-37134 7.5 HIGH UltraVNC Viewer 1.2.4.0 - 'VNCServer' Denial of Service

IV. Related Vulnerabilities

Same product: UltraVNC Launcher
Same vendor: UltraVNC Team
Same weakness: CWE-121

V. Comments for CVE-2020-37132

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