VULNERABILITY INTELLIGENCE
CVE-2019-25600
CVSS score7.1 HIGH
EPSS probability0.70%
CISA KEVNot currently listed
Published2026-03-22
Last modified2026-06-17
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Description
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.
Weakness classification
- CWE-787: Out-of-bounds Write