System crash or kernel-memory write via HFS overflow
Published Aug 25, 2026 · Updated Aug 25, 2026
Buffer overflow in the HFS component of Apple macOS before 14.8.7 or 15.7.7 allows local users to crash the system or write kernel memory. HFS copies attacker-influenced data into a fixed-size buffer without adequate bounds checking; Apple has not disclosed the affected function or input path. A locally running app is required, and successful exploitation is bounded to a system crash or kernel-memory modification; arbitrary kernel code execution has not been reported.
Summary
What happened
Buffer overflow in the HFS component of Apple macOS before 14.8.7 or 15.7.7 allows local users to crash the system or write kernel memory. HFS copies attacker-influenced data into a fixed-size buffer without adequate bounds checking; Apple has not disclosed the affected function or input path. A locally running app is required, and successful exploitation is bounded to a system crash or kernel-memory modification; arbitrary kernel code execution has not been reported.
The record
- CVE
- CVE-2026-64705
- Published
- Aug 25, 2026
- Updated
- Aug 25, 2026
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-120, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 25, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <14.8.7
- Affected versionversion=0 <15.7.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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