CVE-2009-1235

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 1%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
—
EG Score
0.0(none)
EPSS
57.9%
KEV
Not listed

Published

April 2, 2009

Last Modified

April 23, 2026

References (26)

Data Freshness Timeline

(refreshed 7× in last 7d / 40× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
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  8. 2026-06-30 23:19 UTCEPSS rescore
  9. 2026-06-28 14:03 UTCEPSS rescore
  10. 2026-06-28 04:52 UTCEPSS rescore
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  12. 2026-06-27 03:05 UTCEPSS rescore
  13. 2026-06-25 13:46 UTCEPSS rescore
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  15. 2026-06-24 14:02 UTCEPSS rescore
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  17. 2026-06-23 21:29 UTCEPSS rescore
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  24. 2026-06-19 19:22 UTCEPSS rescore
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  1. 2026-06-18 17:49 UTCEPSS rescore
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  5. 2026-06-16 17:49 UTCEPSS rescore
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  7. 2026-06-15 17:44 UTCEPSS rescore
  8. 2026-06-14 23:14 UTCEPSS rescore
  9. 2026-06-14 23:14 UTCEPSS rescore
  10. 2026-06-13 22:57 UTCEPSS rescore
  11. 2026-06-12 23:08 UTCEPSS rescore
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  13. 2026-06-10 22:14 UTCEPSS rescore
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  18. 2026-06-06 13:44 UTCEPSS rescore
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  21. 2026-06-05 22:44 UTCEPSS rescore
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  23. 2026-06-05 06:07 UTCEPSS rescore
  24. 2026-06-04 13:09 UTCEPSS rescore
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  26. 2026-06-02 20:10 UTCEPSS rescore
  27. 2026-06-02 20:10 UTCEPSS rescore
  28. 2026-06-01 13:49 UTCEPSS rescore
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  30. 2026-05-31 22:28 UTCEPSS rescore
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  32. 2026-05-31 00:13 UTCEPSS rescore
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  34. 2026-05-30 17:26 UTCEG score recompute
  35. 2026-05-30 17:26 UTCGHSA enrichment
  36. 2026-05-29 13:40 UTCEPSS rescore
  37. 2026-05-28 13:42 UTCEPSS rescore
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  39. 2026-05-28 13:42 UTCEPSS rescore
  40. 2026-05-27 13:38 UTCEPSS rescore
  41. 2026-05-27 13:38 UTCEPSS rescore
  42. 2026-05-26 13:41 UTCEPSS rescore
  43. 2026-05-26 13:41 UTCEPSS rescore
  44. 2026-05-26 07:16 UTCEPSS rescore
  45. 2026-05-26 07:16 UTCEPSS rescore
  46. 2026-05-24 16:43 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-22 21:15 UTCEPSS rescore
  49. 2026-05-20 22:37 UTCEPSS rescore
  50. 2026-05-20 22:37 UTCEPSS rescore
  51. 2026-05-20 11:21 UTCEPSS rescore
  52. 2026-05-20 11:20 UTCEPSS rescore
  53. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-8266✓ verified
    First seen Mar 23, 2009

    Apple Mac OSX xnu 1228.x - 'hfs-fcntl' Kernel Privilege Escalation

    Open source ↗

Frequently asked(4)

What is CVE-2009-1235?
CVE-2009-1235 is a none vulnerability published on April 2, 2009. 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…
When was CVE-2009-1235 disclosed?
CVE-2009-1235 was first published in the National Vulnerability Database on April 2, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-1235 actively exploited?
CVE-2009-1235 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-1235?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1235, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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