CVE-2019-8266 — Access of Memory Location After End of Buffer in Ultravnc
Severity
9.8CRITICALNVD
EPSS
1.3%
top 20.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 8
Latest updateMay 13
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9