CVE-2024-44231: Apple macOS Auth Bypass Vulnerability

CVE-2024-44231 Overview

CVE-2024-44231 is a state management flaw in Apple macOS that allows a person with physical access to a Mac to bypass the Login Window during a software update. Apple addressed the issue in macOS Sequoia 15.1 through improved state management. The vulnerability requires local physical access and does not permit remote exploitation. Successful exploitation compromises integrity of the affected system by circumventing the authentication boundary enforced at the Login Window.

Critical Impact
An attacker with physical access to a Mac can bypass the Login Window during a software update, gaining access to the system without authenticating.

Affected Products

Apple macOS 15.0
Apple macOS versions prior to Sequoia 15.1
Mac hardware running vulnerable macOS builds

Discovery Timeline

2024-12-20 - CVE-2024-44231 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-44231

Vulnerability Analysis

The vulnerability is a business logic and state management flaw in the macOS Login Window during the software update workflow. During the update process, the system transitions between multiple authentication and UI states. Improper handling of these transitions leaves a window where the Login Window authentication check can be circumvented by an attacker with physical access.

The issue is classified as an authentication bypass affecting integrity. According to the Apple advisory, Apple resolved the flaw by improving state management within the update path so that Login Window enforcement is preserved across state transitions.

Root Cause

The root cause is improper state management in the Login Window component during software update sequences. The Login Window did not consistently enforce its authentication state while an update was in progress. This gap allowed an attacker interacting physically with the machine to reach a post-authentication context without providing valid credentials. Apple categorizes CWE information as NVD-CWE-noinfo, but the behavior aligns with broken authentication tied to a state transition defect.

Attack Vector

Exploitation requires physical access to the target Mac. The attacker must interact with the device while a software update is running or being initiated. No user interaction from the legitimate user is required, and no prior privileges are needed on the system. Because the attack vector is physical, remote exploitation is not possible, which limits the exposure to scenarios involving unattended devices, shared workstations, lost or stolen Macs, and evil-maid style attacks.

No public proof-of-concept exploit is listed in Exploit-DB, and the vulnerability is not present on the CISA Known Exploited Vulnerabilities catalog. Technical details are referenced on the Full Disclosure Mailing List and the Apple Support Article.

Detection Methods for CVE-2024-44231

Indicators of Compromise

Unexpected interactive sessions on a Mac immediately following a software update reboot cycle.
Login Window process anomalies or unexplained transitions to a desktop session without a preceding authentication event in unified logs.
Physical access events recorded by facility badge systems or camera systems that align with unexplained logins.

Detection Strategies

Review macOS unified logs (log show --predicate 'subsystem == "com.apple.loginwindow"') for authentication events that do not correlate with a user-supplied credential.
Correlate softwareupdated activity with subsequent Login Window state transitions to detect bypass patterns.
Monitor endpoint telemetry for post-update sessions that begin without a preceding authd or SecurityAgent credential prompt.

Monitoring Recommendations

Forward macOS endpoint logs to a centralized analytics platform and alert on Login Window state anomalies during update windows.
Track deployment status of macOS Sequoia 15.1 across the fleet and flag hosts still running macOS 15.0.
Alert on physical console logons that occur outside of business hours on managed Macs.

How to Mitigate CVE-2024-44231

Immediate Actions Required

Upgrade all affected Macs to macOS Sequoia 15.1 or later, which contains the vendor fix.
Enforce FileVault full-disk encryption so that unauthenticated console access does not expose data at rest.
Restrict physical access to Macs during software update windows, especially in shared or public environments.
Configure Mobile Device Management (MDM) policies to require authentication and to schedule updates on managed devices.

Patch Information

Apple fixed CVE-2024-44231 in macOS Sequoia 15.1 through improved state management in the Login Window update path. Administrators should deploy this update using Software Update, MDM commands (softwareupdate --install --all --restart), or through their standard patch management workflow. Full details are available in the Apple Support Article.

Workarounds

Where immediate patching is not possible, disable automatic software update prompts on unattended devices and schedule updates only when the device is physically supervised.
Enable FileVault to protect data even if the Login Window is bypassed.
Configure a firmware password or Activation Lock (where supported) to raise the bar for physical attackers.
Physically secure Macs in locked enclosures or supervised locations until the patch is applied.

bash

# Configuration example: check macOS version and trigger update via MDM/CLI
sw_vers -productVersion
sudo softwareupdate --list
sudo softwareupdate --install --all --restart

# Verify FileVault is enabled
sudo fdesetup status