CVE-2020-37132
UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service
- State
- Published
- Severity
- 6.7 Medium
- Published
- Feb 5, 2026
- Updated
- Feb 5, 2026
- Reserved
- Feb 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.7 Medium | 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 | VulnCheck |
| 3.1 | 6.2 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-121 Stack-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
UltraVNC LauncherUltraVNC Team |
|
References
- ExploitDB-48290exploit
- UltraVNC Official Homepageproduct
- VulnCheck Advisory: UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Servicethird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.