CVE-2025-43199: Apple macOS Privilege Escalation Flaw

CVE-2025-43199 Overview

CVE-2025-43199 is a critical privilege escalation vulnerability affecting multiple versions of Apple macOS. The vulnerability stems from a permissions issue that was addressed by removing the vulnerable code. A malicious application can exploit this flaw to gain root privileges on affected systems, providing attackers with complete control over the compromised machine.

This vulnerability is classified under CWE-269 (Improper Privilege Management), indicating that the affected component failed to properly restrict privilege assignment or management, allowing unauthorized elevation to root-level access.

Critical Impact

A malicious app may be able to gain root privileges, enabling complete system compromise, data theft, malware installation, and persistent access to affected macOS systems.

Affected Products

• macOS Sequoia versions prior to 15.6
• macOS Sonoma versions prior to 14.7.7
• macOS Ventura versions prior to 13.7.7

Discovery Timeline

• 2025-07-30 - CVE-2025-43199 published to NVD
• 2025-11-03 - Last updated in NVD database

Technical Details for CVE-2025-43199

Vulnerability Analysis

The vulnerability exists within macOS privilege management functionality. The flaw allows a malicious application to bypass normal permission restrictions and escalate privileges to root level. Apple's advisory indicates the issue was severe enough that the remediation approach involved completely removing the vulnerable code rather than patching it, suggesting the underlying implementation had fundamental security issues that could not be easily corrected.

The network attack vector combined with no required privileges or user interaction makes this vulnerability particularly dangerous. An attacker could potentially deliver a malicious application through various means, and once executed on the target system, it could silently escalate to root privileges without alerting the user.

Root Cause

The root cause is an improper privilege management issue (CWE-269) within macOS. The vulnerable code component did not properly validate or restrict privilege assignments, allowing applications to request and receive elevated permissions they should not have access to. The specific implementation allowed privilege boundaries to be circumvented, enabling arbitrary applications to gain root-level access.

Attack Vector

The attack can be initiated remotely via network-based delivery of a malicious application. The exploitation requires:

1. Delivery of a malicious application to the target macOS system
2. Execution of the application (no special privileges required)
3. Exploitation of the permissions flaw to escalate to root

Once root privileges are obtained, the attacker has full control over the affected system, including the ability to install persistent malware, access all files, modify system configurations, and potentially pivot to other systems on the network.

The vulnerability mechanism involves improper privilege management where the affected macOS component fails to properly validate permission requests. For detailed technical information, refer to the Full Disclosure posts and Apple's security advisories.

Detection Methods for CVE-2025-43199

Indicators of Compromise

• Unexpected processes running with root privileges that were launched by non-privileged user applications
• Suspicious application installations from unverified sources followed by privilege escalation events
• System log entries showing abnormal privilege transitions or authorization framework anomalies
• New or modified files in system directories that require root access

Detection Strategies

• Monitor for unauthorized privilege escalation events using macOS Unified Logging, particularly log show --predicate 'subsystem == "com.apple.authorization"'
• Deploy endpoint detection solutions capable of identifying applications attempting to exploit privilege management flaws
• Implement application whitelisting to prevent execution of unauthorized or unsigned applications
• Use SentinelOne's behavioral AI to detect anomalous privilege escalation patterns

Monitoring Recommendations

• Enable enhanced auditing for security-relevant events using auditctl or OpenBSM on macOS
• Configure alerts for any new root-level processes spawned by user-space applications
• Monitor for changes to system integrity protection (SIP) status or attempts to disable security features
• Review /var/log/install.log and /var/log/system.log for suspicious installation or privilege-related entries

How to Mitigate CVE-2025-43199

Immediate Actions Required

• Update all macOS Sequoia systems to version 15.6 or later immediately
• Update all macOS Sonoma systems to version 14.7.7 or later
• Update all macOS Ventura systems to version 13.7.7 or later
• Restrict installation of applications to those from the Mac App Store or identified developers only
• Audit systems for any signs of compromise before and after patching

Patch Information

Apple has released security updates to address this vulnerability. The patches are available through the following resources:

• Apple Security Advisory 124149 - macOS Sequoia 15.6
• Apple Security Advisory 124150 - macOS Sonoma 14.7.7
• Apple Security Advisory 124151 - macOS Ventura 13.7.7

Updates can be applied through System Settings > General > Software Update on affected macOS systems.

Workarounds

• Enable Gatekeeper to restrict application execution to only those from the App Store and identified developers
• Ensure System Integrity Protection (SIP) is enabled to provide additional defense against privilege escalation
• Implement strict application control policies using MDM solutions to prevent unauthorized application execution
• Consider network segmentation for critical systems until patches can be applied

# Verify System Integrity Protection status
csrutil status

# Check Gatekeeper status
spctl --status

# List recent privilege escalation events in logs
log show --predicate 'eventMessage contains "privilege"' --last 24h

# Verify macOS version to confirm patch status
sw_vers