CVE-2020-37132

UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service

Published Feb 5, 2026 CVSS 4.0 · 6.7 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Uvnc
Uvnc ultravnc
Weaknesses CWE-787
CPEs cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
Vendors & Products Uvnc
Uvnc ultravnc
Type Values Removed Values Added
First Time appeared Ultravnc
Ultravnc ultravnc
Vendors & Products Ultravnc
Ultravnc ultravnc
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Feb 5, 2026, 6:44 PM
Reserved
Feb 3, 2026, 4:27 PM
Status
Analyzed
Published
Feb 5, 2026, 5:16 PM
Modified
Jun 17, 2026, 3:17 AM