Kernel code execution via out-of-bounds read
Published Sep 8, 2021 · Updated Aug 3, 2024
Out-of-bounds read in Apple Neural Engine in iOS and iPadOS before 14.5 and macOS before 11.3 allows local users to run kernel code. Apple states only that insufficient input validation permits the component to read beyond a buffer; no affected function or input format is public. Exploitation requires a malicious application already running on a supported device and yields arbitrary code execution with kernel privileges.
Summary
What happened
Out-of-bounds read in Apple Neural Engine in iOS and iPadOS before 14.5 and macOS before 11.3 allows local users to run kernel code. Apple states only that insufficient input validation permits the component to read beyond a buffer; no affected function or input format is public. Exploitation requires a malicious application already running on a supported device and yields arbitrary code execution with kernel privileges.
The record
- CVE
- CVE-2021-1867
- Published
- Sep 8, 2021
- Updated
- Aug 3, 2024
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- CWE-125, T1068
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 8, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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 <14.5
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
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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