CVE-2019-8264 is a critical out-of-bounds access vulnerability in the Ultra2 decoder of the UltraVNC client (revision 1203). This flaw allows for potential remote code execution via network connectivity. With a CVSS score of 9.8 (CRITICAL), it presents a high risk due to its network-based attack vector, low complexity, and severe impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness. The issue has been patched in UltraVNC revision 1204.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.2.2.3CPE matchmatch criteria | cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.