Read the docs
TI-2006-06474 Aliases CVE-2006-6730GHSA-83jc-959v-qgmc

OpenBSD and NetBSD permit usermode code to kill the display server and write to the X.Org…

Priority LOW 29Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

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.

Why it matters now

EPSS 0.00259 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*2.0.4VulnerableNetBSD
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*all versionsVulnerableOpenBSD
  • cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:* Versions 2.0.4 Vulnerable ·NetBSD
  • cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·OpenBSD

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-6730
  2. 2026-10-03 Alias added: GHSA-83jc-959v-qgmc

References

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences