Process-memory disclosure via out-of-bounds image read
Published Jan 10, 2024 · Updated Jun 16, 2025
Out-of-bounds read in Apple ImageIO allows remote attackers to disclose process memory when an affected device processes an image. ImageIO inadequately validates image input bounds before a memory read, allowing the read to extend beyond the intended buffer. Exploitation requires image processing and user interaction; affected releases are iOS and iPadOS before 16.4, tvOS before 16.4, macOS before 13.3, and watchOS before 9.4.
Summary
What happened
Out-of-bounds read in Apple ImageIO allows remote attackers to disclose process memory when an affected device processes an image. ImageIO inadequately validates image input bounds before a memory read, allowing the read to extend beyond the intended buffer. Exploitation requires image processing and user interaction; affected releases are iOS and iPadOS before 16.4, tvOS before 16.4, macOS before 13.3, and watchOS before 9.4.
The record
- CVE
- CVE-2023-42865
- Published
- Jan 10, 2024
- Updated
- Jun 16, 2025
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- CWE-125, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 10, 2024CVE publishedPublication date reported by the CVE source.
- Jun 16, 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 <16.4
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
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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