CVE-2019-8273 is a critical heap buffer overflow vulnerability in UltraVNC revision 1211, specifically within the VNC server's file transfer request handler. This flaw affects various Siemens SINUMERIK and UVNC UltraVNC products. With a CVSS score of 9.8, it is highly severe, allowing unauthenticated attackers to achieve remote code execution over the network with low complexity. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness. Organizations using affected versions should upgrade to revision 1212 or later to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.2.2.3CPE matchmatch criteria | cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* | ||
< 4.8CPE matchmatch criteria | cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p:*:*:*:*:*:*:*:* | ||
< 14.00CPE matchmatch criteria | cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc:*:*:*:*:*:*:*:* | ||
<= 12.01CPE matchmatch criteria | cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/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.