CVE-2019-25601
Medium
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.
SeverityMedium
CVSS6.2
Exploit probability—
ProductUltraVNC Launcher
PublishedMar 22, 2026
First seenMar 22, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Uvnc UltraVNC Launcher | 1.2.2.4 | — |
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