What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-05 · updated 2026-06-17
• Weakness: CWE-121

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.

Affected products

• Kaspersky Lab UltraVNC: through 1.2.4.0

References

• https://www.exploit-db.com/exploits/48290
• https://www.uvnc.com/
• https://www.vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service

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