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Case File

CVE-2006-6730

MEDIUM · CVSS 6.6 EPSS 0.26%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2006-12-26 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.6. See the original NVD description below for full technical details.

CVE
CVE-2006-6730
Severity
MEDIUM
CVSS
6.6
EPSS
0.26%

Original NVD Description

OpenBSD and NetBSD permit usermode code to kill the display server and write to the X.Org /dev/xf86 device, which allows local users with root privileges to reduce securelevel by replacing the System Management Mode (SMM) handler via a write to an SMRAM address within /dev/xf86 (aka the video card memory-mapped I/O range), and then launching the new handler via a System Management Interrupt (SMI), as demonstrated by a write to Programmed I/O port 0xB2.