High 7.2Published Oct 3, 2006

CVE-2006-4392The Mach kernel, as used in operating systems including (1) Mac OS X 10.4 through 10.4.7 and (2) OpenStep before 4.2, allows local users to gain privileges via a parent process that forces an excepti…

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

Does this affect you?

It affects apple mac_os_x and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for apple mac_os_x Exploited in the last 30 days

The Mach kernel, as used in operating systems including (1) Mac OS X 10.4 through 10.4.7 and (2) OpenStep before 4.2, allows local users to gain privileges via a parent process that forces an exception in a setuid child and uses Mach exception ports to modify the child's thread context and task address space in a way that causes the child to call a parent-controlled function.

CVSS: 7.2 HIGH (v2.0, NVD)AV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

apple mac_os_x apple:mac_os_x	10.4; 10.4.1; 10.4.2; 10.4.3; 10.4.4; 10.4.5; 10.4.6; 10.4.7	NVD
next openstep next:openstep	4.1	NVD

References

References

http://lists.apple.com/archives/security-announce/2006/Sep/msg00002.html	patch
http://secunia.com/advisories/22187	patch, vendor-advisory
http://securityreason.com/securityalert/1663
http://securitytracker.com/id?1016954
http://www.kb.cert.org/vuls/id/838404	us-government-resource
http://www.matasano.com/log/530/matasano-advisory-macos-x-mach-exception-server-privilege-escalation/	vendor-advisory
http://www.osvdb.org/29269
http://www.securityfocus.com/archive/1/447396/100/0/threaded
http://www.securityfocus.com/bid/20271	patch
http://www.us-cert.gov/cas/techalerts/TA06-275A.html	us-government-resource
1–10 of 12

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.