Coprocessor memory disclosure via out-of-bounds read
Published Sep 15, 2025 · Updated Sep 15, 2025
Out-of-bounds read in IOMobileFrameBuffer in Apple macOS before 26 allows local users to disclose coprocessor memory through an app. Apple identifies inadequate bounds checking in IOMobileFrameBuffer but does not disclose the affected operation or buffer. Execution of an app on a supported Mac is required, and the reported consequence is limited to disclosure of coprocessor memory.
Summary
What happened
Out-of-bounds read in IOMobileFrameBuffer in Apple macOS before 26 allows local users to disclose coprocessor memory through an app. Apple identifies inadequate bounds checking in IOMobileFrameBuffer but does not disclose the affected operation or buffer. Execution of an app on a supported Mac is required, and the reported consequence is limited to disclosure of coprocessor memory.
The record
- CVE
- CVE-2025-43366
- Published
- Sep 15, 2025
- Updated
- Sep 15, 2025
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- Unavailable
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?
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- 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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