CVE-2006-6730 json
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 r…
published 2006-12-26 19 y ago modified 2026-06-16 4 mo ago also EUVD-2006-6713
- cvss
- 6.6
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.6 | AV:L/AC:M/Au:S/C:C/I:C/A:C |
References
-
securityfocus.com
/archive/1/454510/100/0/threaded
mailing-list
-
lists.freedesktop.org
/archives/xorg/2004-June/000927.html
mailing-list
-
securityfocus.com
/archive/1/454706/100/0/threaded
mailing-list
- ssi.gouv.fr /fr/sciences/fichiers/lti/cansecwest2006-duflot-paper.pdf
- cansecwest.com /slides06/csw06-duflot.ppt
-
securityfocus.com
/archive/1/454379/100/0/threaded
mailing-list
Sources
- CVE List CVE-2006-6730
- NVD CVE-2006-6730
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.