App termination via crafted-file out-of-bounds write
Published Sep 14, 2026 · Updated Sep 14, 2026
An out-of-bounds write in affected Apple operating systems allows context-dependent attackers to terminate an app via a crafted file. Apple has not disclosed the affected parser or code locus, but states that crafted-file processing writes outside valid bounds and that improved bounds checking resolves the issue. The file must be processed by an affected app, and the reported consequence is app termination rather than system compromise or data access.
Summary
What happened
An out-of-bounds write in affected Apple operating systems allows context-dependent attackers to terminate an app via a crafted file. Apple has not disclosed the affected parser or code locus, but states that crafted-file processing writes outside valid bounds and that improved bounds checking resolves the issue. The file must be processed by an affected app, and the reported consequence is app termination rather than system compromise or data access.
The record
- CVE
- CVE-2026-28966
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 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 <26.7
- Affected versionversion=0 <27
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
No sourced classifications are available.
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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