CVE-2026-43774: An app may be able to access sensitive user data in Apple macOS
An out-of-bounds read was addressed with improved bounds checking. 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 access sensitive user data.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds read (CWE-787) in Apple macOS that could permit an application to access sensitive user data improperly. The flaw was mitigated by enhancing bounds checking in the affected components. The fix is included in macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6 versions. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low attack complexity, no privileges required, user interaction needed, and high confidentiality impact but no integrity or availability impact.
Potential Impact
An attacker with local access and the ability to trick a user into interacting with a malicious app could exploit this vulnerability to read sensitive user data. The confidentiality of user data is at risk, but integrity and availability are not affected. There are no reports of exploitation in the wild.
Mitigation Recommendations
A fix is available 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 the vulnerability. No additional mitigation guidance is provided or required beyond applying the official patches.
CVE-2026-43774: An app may be able to access sensitive user data in Apple macOS
Description
An out-of-bounds read was addressed with improved bounds checking. 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 access sensitive user data.
CVSS v3.1
Score 5.5medium
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read (CWE-787) in Apple macOS that could permit an application to access sensitive user data improperly. The flaw was mitigated by enhancing bounds checking in the affected components. The fix is included in macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6 versions. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low attack complexity, no privileges required, user interaction needed, and high confidentiality impact but no integrity or availability impact.
Potential Impact
An attacker with local access and the ability to trick a user into interacting with a malicious app could exploit this vulnerability to read sensitive user data. The confidentiality of user data is at risk, but integrity and availability are not affected. There are no reports of exploitation in the wild.
Mitigation Recommendations
A fix is available 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 the vulnerability. No additional mitigation guidance is provided or required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.818Z
- State
- PUBLISHED
Threat ID: 6a67c1b99c2644c7f8cb102b
Added to database: 07/27/2026, 20:38:17 UTC
Last enriched: 07/29/2026, 23:33:48 UTC
Last updated: 09/11/2026, 22:08:25 UTC
Views: 49
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