CVE-2009-1235
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict...
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.
Exploit likelihood
What each source reports
NVD Score used
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.
- Record
CVE-2009-1235- CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.
- Record
CVE-2009-1235- Updated
- 2026-11-02
EUVDEUVD-2009-1234 No score
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.
- Record
EUVD-2009-1234- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-79gj-w7hg-rmmw No score
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict...
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.
- Record
GHSA-79gj-w7hg-rmmw- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Apple Mac OSX xnu 1228.x - 'hfs-fcntl' Kernel Privilege Escalation | 2009-03-23 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-1235 is a high vulnerability (CVSS 7.2) in Apple Mac Os X, published April 2, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.98%, the 62nd percentile. No source names a fixed version.
References
support.apple.com/kb/HT3757
vupen.com/english/advisories/2009/0822
secunia.com/advisories/36096
digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.c
lists.apple.com/archives/security-announce/2009/Aug/msg00001.html
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securityfocus.com/bid/34203
exploit-db.com/exploits/8266
securitytracker.com/id?1022671
informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181
us-cert.gov/cas/techalerts/TA09-218A.html
nvd.nist.gov/vuln/detail/CVE-2009-1235
github.com/advisories/GHSA-79gj-w7hg-rmmw