Local kernel-memory disclosure via improper memory handling
Published Jul 29, 2025 · Updated Apr 2, 2026
Memory disclosure in Apple macOS allows local users to read kernel memory via a malicious app on Sonoma before 14.7.7 or Sequoia before 15.6. Apple identifies WebContentFilter and improper memory handling but has not disclosed the specific operation that exposes kernel contents. Execution of a malicious app on an affected Mac is required; the documented consequence is kernel-memory disclosure, with no reported modification or service interruption.
Summary
What happened
Memory disclosure in Apple macOS allows local users to read kernel memory via a malicious app on Sonoma before 14.7.7 or Sequoia before 15.6. Apple identifies WebContentFilter and improper memory handling but has not disclosed the specific operation that exposes kernel contents. Execution of a malicious app on an affected Mac is required; the documented consequence is kernel-memory disclosure, with no reported modification or service interruption.
The record
- CVE
- CVE-2025-43189
- Published
- Jul 29, 2025
- Updated
- Apr 2, 2026
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-200, T1005
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 29, 2025CVE publishedPublication date reported by the CVE source.
- Apr 2, 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 <14.7.7
- Affected versionversion=0 <15.6
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.
Weakness, pattern, technique
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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