CVE-2019-8262

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

UltraVNC revision 1203 has multiple heap buffer overflow vulnerabilities in VNC client code inside Ultra decoder, which results in code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1204.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122CWE-787

Affected software

VendorProductVersions
UltraVNCUltraVNC1.2.2.3

References

Timeline

Published
Mar 5, 2019
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2019

CVE-2019-82636.5UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denialCVE-2019-82649.8UltraVNC revision 1203 has out-of-bounds access vulnerability in VNC client inside Ultra2 decoder, which can potentially result in code execCVE-2019-82659.8UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of SETPIXELS macro in VNC client codeCVE-2019-82669.8UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of ClientConnection::Copybuffer functCVE-2019-82677.5UltraVNC revision 1207 has out-of-bounds read vulnerability in VNC client code inside TextChat module, which results in a denial of service CVE-2019-82689.8UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadStrCVE-2019-82697.5UltraVNC revision 1206 has stack-based Buffer overflow vulnerability in VNC client code inside FileTransfer module, which leads to a denial CVE-2019-82707.5UltraVNC revision 1210 has out-of-bounds read vulnerability in VNC client code inside Ultra decoder, which results in a denial of service (DCVE-2019-82719.8UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can potentially resulCVE-2019-82729.8UltraVNC revision 1211 has multiple off-by-one vulnerabilities in VNC server code, which can potentially result in code execution. This attaCVE-2019-82739.8UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentialCVE-2019-82749.8UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentially
CVE-2019-8262: Critical severity, CVSS 9.8 | Vulnix