CVE-2019-25601
UltraVNC Launcher 1.2.2.4 Denial of Service Buffer Overflow
- State
- Published
- Severity
- 6.9 Medium
- Published
- Mar 22, 2026
- Updated
- Oct 1, 2026
- Reserved
- Mar 22, 2026
Description
UltraVNC Launcher 1.2.2.4 contains a buffer overflow vulnerability in the Path vncviewer.exe property field that allows local attackers to crash the application by supplying an excessively long string. Attackers can input a 300-byte payload of repeated characters through the Properties dialog to trigger a denial of service condition.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/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:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
UltraVNC LauncherUvnc |
|
References
- ExploitDB-46703exploit
- Official Product Homepageproduct
- Product Referenceproduct
- VulnCheck Advisory: UltraVNC Launcher 1.2.2.4 Denial of Service Buffer Overflowthird-party-advisory
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