CVE-2017-5581 describes a critical buffer overflow vulnerability in TigerVNC versions prior to 1.7.1, specifically within the ModifiablePixelBuffer::fillRect function. This flaw allows remote servers to execute arbitrary code on a client system by sending a specially crafted RRE message with subrectangle data exceeding framebuffer boundaries. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction required, leading to high impacts on confidentiality, integrity, and availability. Despite its severity, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed in CISA's KEV catalog, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.7CPE matchmatch criteria | cpe:2.3:a:tigervnc:tigervnc:*:*:*:*:*:*:*:* |
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.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.