CVE-2026-43756: An app may be able to access user-sensitive data in Apple macOS
A logic issue was addressed with improved validation. 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 user-sensitive data.
AI Analysis
Technical Summary
CVE-2026-43756 is a logic vulnerability in Apple macOS that may allow an application to access sensitive user data due to insufficient validation. The issue has been resolved by Apple through improved validation checks and is fixed in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The vulnerability is classified under CWE-285 (Improper Authorization) and CWE-200 (Information Exposure). The CVSS v3.1 base score is 5.5, indicating a medium severity with local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact. No public exploits have been reported.
Potential Impact
An attacker with local access and the ability to trick a user into interacting with a malicious app could gain unauthorized access to sensitive user data. The integrity and availability of the system are not impacted. The confidentiality impact is high, meaning sensitive information could be exposed without authorization.
Mitigation Recommendations
Apple has fixed this vulnerability 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 issue. No other mitigation guidance is provided or necessary as the fix is official and available.
CVE-2026-43756: An app may be able to access user-sensitive data in Apple macOS
Description
A logic issue was addressed with improved validation. 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 user-sensitive data.
CVSS v3.1
Score 5.5medium
Affected software
Apple
macOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43756 is a logic vulnerability in Apple macOS that may allow an application to access sensitive user data due to insufficient validation. The issue has been resolved by Apple through improved validation checks and is fixed in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The vulnerability is classified under CWE-285 (Improper Authorization) and CWE-200 (Information Exposure). The CVSS v3.1 base score is 5.5, indicating a medium severity with local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact. No public exploits have been reported.
Potential Impact
An attacker with local access and the ability to trick a user into interacting with a malicious app could gain unauthorized access to sensitive user data. The integrity and availability of the system are not impacted. The confidentiality impact is high, meaning sensitive information could be exposed without authorization.
Mitigation Recommendations
Apple has fixed this vulnerability 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 issue. No other mitigation guidance is provided or necessary as the fix is official and available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.816Z
- State
- PUBLISHED
Threat ID: 6a67c1b79c2644c7f8cb0ede
Added to database: 07/27/2026, 20:38:15 UTC
Last enriched: 07/29/2026, 23:37:05 UTC
Last updated: 09/11/2026, 22:06:33 UTC
Views: 44
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