CVE-2025-31241 Overview
CVE-2025-31241 is a double free memory corruption vulnerability affecting multiple Apple operating systems. A double free issue was addressed with improved memory management across Apple's product ecosystem. This vulnerability allows a remote attacker to cause unexpected application termination through network-based attacks without requiring user interaction or prior privileges.
Double free vulnerabilities occur when memory is freed more than once, which can corrupt memory management structures and lead to application crashes. In this case, the vulnerability enables denial of service conditions across a wide range of Apple devices including iPhones, iPads, Macs, Apple Watches, Apple TVs, and the Apple Vision Pro headset.
Critical Impact
Remote attackers can exploit this double free vulnerability to cause unexpected application termination across Apple devices without user interaction.
Affected Products
- Apple iOS 18.5 and iPadOS 18.5 (and earlier versions)
- Apple iPadOS 17.7.7 (and earlier versions)
- Apple macOS Sequoia 15.5 (and earlier versions)
- Apple macOS Sonoma 14.7.6 (and earlier versions)
- Apple macOS Ventura 13.7.6 (and earlier versions)
- Apple watchOS 11.5 (and earlier versions)
- Apple tvOS 18.5 (and earlier versions)
- Apple visionOS 2.5 (and earlier versions)
Discovery Timeline
- May 12, 2025 - CVE-2025-31241 published to NVD
- November 3, 2025 - Last updated in NVD database
Technical Details for CVE-2025-31241
Vulnerability Analysis
This vulnerability is classified as CWE-415 (Double Free), a memory corruption issue where a program attempts to free the same memory location twice. When memory is allocated and then freed, the memory allocator marks that memory region as available for reuse. If the same pointer is freed again without being reallocated, it corrupts the memory allocator's internal data structures.
The double free condition in CVE-2025-31241 can be triggered remotely over the network, enabling attackers to cause denial of service without requiring authentication or user interaction. While the primary impact is availability (application termination), double free vulnerabilities can sometimes be chained with other techniques for more severe exploitation scenarios.
Apple has addressed this vulnerability through improved memory management, likely implementing safeguards such as nullifying pointers after free operations or adding additional validation checks before memory deallocation.
Root Cause
The root cause of CVE-2025-31241 stems from improper memory management where memory deallocation routines were called multiple times on the same memory address. This typically occurs in scenarios where:
- Multiple code paths free the same pointer without coordination
- Error handling routines free memory that was already freed in the normal execution path
- Object lifecycle management fails to track whether an object has already been deallocated
Apple's fix addresses this by implementing improved memory management practices that prevent the second free operation from executing on already-deallocated memory.
Attack Vector
The vulnerability is exploitable remotely over the network. An attacker can craft malicious network traffic designed to trigger the double free condition in the target application. The attack does not require any special privileges or user interaction, making it accessible to unauthenticated remote attackers.
The exploitation results in unexpected application termination (denial of service). While the immediate impact is limited to availability, organizations should prioritize patching as memory corruption vulnerabilities can sometimes be escalated to achieve code execution under certain conditions.
Detection Methods for CVE-2025-31241
Indicators of Compromise
- Unexpected application crashes or terminations on Apple devices
- Memory allocation errors in system logs related to double free conditions
- Unusual network traffic patterns targeting Apple services
- Repeated crash reports from the same application component
Detection Strategies
- Monitor Apple device crash logs for double free memory corruption signatures
- Implement network traffic analysis to detect anomalous patterns targeting Apple services
- Deploy endpoint detection solutions capable of identifying memory corruption attempts
- Review system diagnostic reports for unexpected application termination events
Monitoring Recommendations
- Enable detailed crash reporting on managed Apple devices
- Configure SIEM rules to alert on repeated application crashes across endpoints
- Monitor network traffic for suspicious activity targeting known vulnerable Apple services
- Implement application-level logging to capture pre-crash events
How to Mitigate CVE-2025-31241
Immediate Actions Required
- Update all Apple devices to the latest patched versions immediately
- Prioritize updates for devices exposed to untrusted networks
- Review device management policies to ensure automatic updates are enabled
- Monitor for signs of exploitation on unpatched devices
Patch Information
Apple has released security updates that address this vulnerability across all affected platforms. Apply the following updates:
- iOS/iPadOS: Update to iOS 18.5 / iPadOS 18.5 or iPadOS 17.7.7
- macOS: Update to macOS Sequoia 15.5, macOS Sonoma 14.7.6, or macOS Ventura 13.7.6
- watchOS: Update to watchOS 11.5
- tvOS: Update to tvOS 18.5
- visionOS: Update to visionOS 2.5
For detailed patch information, refer to the official Apple Security Advisories: Apple Support Document #122404, Apple Support Document #122405, Apple Support Document #122716, Apple Support Document #122717, Apple Support Document #122718, Apple Support Document #122720, Apple Support Document #122721, and Apple Support Document #122722.
Workarounds
- Limit network exposure of vulnerable devices until patches can be applied
- Implement network segmentation to isolate unpatched Apple devices
- Use mobile device management (MDM) solutions to enforce rapid patch deployment
- Monitor for and block suspicious network traffic targeting affected devices
# Check current macOS version
sw_vers -productVersion
# Check iOS/iPadOS version via command line (for managed devices)
# Using Apple Configurator or MDM console to verify device versions
# Force software update check on macOS
softwareupdate --list
softwareupdate --install --all
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
