CVE-2020-37132

UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service

CVSS 6.7 MEDIUMEPSS 0.2%CWE-121

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.7EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

UltraVNC Team · UltraVNC Launcher

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References

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