CVE Intelligence

Uvnc UltraVNC Viewer vulnerabilities

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Published CVEs affecting Uvnc UltraVNC Viewer: 1 record(s), with affected versions and fixes.

CVE-2019-25600 Medium · 6.5 CWE-787 Mar 22, 2026
UltraVNC Viewer 1.2.2.4 Denial of Service via Buffer Overflow
UltraVNC Viewer 1.2.2.4 contains a denial of service vulnerability that allows attackers to crash the application by supplying an oversized string to the VNC Server input field. Attackers can paste a malicious string containing 256 repeated characters into the VNC Server field and click Connect to trigger a buffer overflow that crashes the viewer.