Description
UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of ClientConnection::Copybuffer function in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. User interaction is required to trigger these vulnerabilities. These vulnerabilities have been fixed in revision 1208.
References (3)
Scores
CVSS v3
9.8
EPSS
0.0126
EPSS Percentile
79.5%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
CWE-787
CWE-788
Status
published
Products (1)
uvnc/ultravnc
< 1.2.2.3
Published
Mar 08, 2019
Tracked Since
Feb 18, 2026