CVE-2026-43694: An app may be able to cause unexpected system termination or write kernel memory in Apple macOS
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination or write kernel memory.
AI Analysis
Technical Summary
CVE-2026-43694 is a critical memory handling vulnerability in Apple macOS that could allow an application to cause unexpected system termination or write to kernel memory. The issue was addressed by Apple through improved memory handling techniques. The vulnerability affects macOS versions prior to Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS 3.1 base score is 9.8, indicating high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported at this time.
Potential Impact
Successful exploitation of this vulnerability could allow an unprivileged application to cause a system crash or execute arbitrary code with kernel privileges, potentially leading to full system compromise. The impact includes complete loss of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Apple has released official fixes in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these versions or later to remediate this vulnerability. Patch status is confirmed by the vendor advisory. No additional mitigation steps are specified.
CVE-2026-43694: An app may be able to cause unexpected system termination or write kernel memory in Apple macOS
Description
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination or write kernel memory.
CVSS v3.1
Score 9.8critical
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43694 is a critical memory handling vulnerability in Apple macOS that could allow an application to cause unexpected system termination or write to kernel memory. The issue was addressed by Apple through improved memory handling techniques. The vulnerability affects macOS versions prior to Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS 3.1 base score is 9.8, indicating high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported at this time.
Potential Impact
Successful exploitation of this vulnerability could allow an unprivileged application to cause a system crash or execute arbitrary code with kernel privileges, potentially leading to full system compromise. The impact includes complete loss of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Apple has released official fixes in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these versions or later to remediate this vulnerability. Patch status is confirmed by the vendor advisory. No additional mitigation steps are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.642Z
- State
- PUBLISHED
Threat ID: 6a67c1b49c2644c7f8cb0e21
Added to database: 07/27/2026, 20:38:12 UTC
Last enriched: 07/29/2026, 23:52:38 UTC
Last updated: 09/11/2026, 07:31:53 UTC
Views: 79
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