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How the Mentioned CVE Works
CVE-2025-43473 is a critical information disclosure vulnerability in macOS Tahoe. The core flaw resides in improper application state management within the operating system’s frameworks. When an application transitions between states—such as moving between foreground, background, or suspended modes—macOS may fail to correctly isolate or sanitize sensitive data in memory. This state handling error could allow a malicious or compromised application, running with standard user privileges, to access residual sensitive information belonging to other applications or the system. The vulnerability exploits the race condition or logic flaw during these state transitions to read data from memory regions that should have been protected or cleared. Successful exploitation does not require elevated privileges but depends on a user executing a crafted application. The fixed implementation in version 26.1 enforces stricter isolation and ensures sensitive data is definitively purged during all state changes.
Platform: macOS
Version: Tahoe to 26.0
Vulnerability: Information Disclosure
Severity: Critical
date: 2025-12-12
Prediction: 2025-12-19
What Undercode Say:
Check current macOS version system_profiler SPSoftwareDataType | grep "System Version" List running processes and their state ps aux Monitor application lifecycle events via console (stream) log stream --predicate 'subsystem contains "com.apple.state"'
How Exploit:
A crafted application triggers specific state transitions (e.g., foreground-to-background) to exploit flawed memory handling. It then scans or samples accessible memory regions to harvest residual sensitive data like authentication tokens, contact details, or cached files from other apps.
Protection from this CVE
Immediately update to macOS Tahoe version 26.1 or later, which contains the fix. Do not install or run untrusted applications from outside the App Store.
Impact
Unauthorized access to sensitive user data (e.g., messages, documents, keys) by a malicious application, leading to privacy breaches and potential further system compromise.
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Sources:
Reported By: nvd.nist.gov
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