Heap corruption via insufficient Libinfo bounds checks
Published Sep 15, 2025 · Updated Sep 15, 2025
Out-of-bounds write in Libinfo in Apple macOS allows local users to corrupt heap memory by processing a crafted string. Libinfo performs inadequate bounds checking while processing an untrusted string, allowing a write outside the intended heap buffer; Apple has not disclosed the affected function or string format. Exploitation requires local access and user interaction; affected branches are Sonoma before 14.8, Sequoia before 15.7, and Tahoe before 26.
Summary
What happened
Out-of-bounds write in Libinfo in Apple macOS allows local users to corrupt heap memory by processing a crafted string. Libinfo performs inadequate bounds checking while processing an untrusted string, allowing a write outside the intended heap buffer; Apple has not disclosed the affected function or string format. Exploitation requires local access and user interaction; affected branches are Sonoma before 14.8, Sequoia before 15.7, and Tahoe before 26.
The record
- CVE
- CVE-2025-43353
- Published
- Sep 15, 2025
- Updated
- Sep 15, 2025
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-787
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 15, 2025CVE publishedPublication date reported by the CVE source.
- Sep 15, 2025Record 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=unspecified <14.8
- Affected versionversion=unspecified <15.7
- Affected versionversion=unspecified <26
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
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Technologies
Your stack
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Your stack
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