CVE-2018-18883 is a denial-of-service vulnerability affecting Xen versions 4.9.x through 4.11.x on Intel x86 platforms. It allows x86 HVM and PVH guests to trigger a NULL pointer dereference in the host OS, potentially leading to a system crash, due to insufficient restrictions on nested VT-x. This vulnerability has a CVSS score of 8.8 (High), indicating a local attack with low complexity that can lead to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.9.0, <= 4.11.0CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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.