CVE-2025-24131: Apple iPadOS Denial-of-Service Vulnerability

CVE-2025-24131 Overview

CVE-2025-24131 is a memory handling vulnerability affecting multiple Apple operating systems including iOS, iPadOS, macOS, watchOS, tvOS, and visionOS. The vulnerability stems from improper memory handling that could allow an attacker in a privileged position to perform a denial-of-service attack. Apple addressed this issue with improved memory handling in the January 2025 security updates.

Critical Impact

An attacker with privileged access can exploit this memory handling flaw to cause a denial-of-service condition across a wide range of Apple devices, potentially disrupting enterprise mobile device fleets and workstations.

Affected Products

• Apple iOS (versions prior to 18.3)
• Apple iPadOS (versions prior to 18.3)
• Apple macOS Sequoia (versions prior to 15.3)
• Apple watchOS (versions prior to 11.3)
• Apple tvOS (versions prior to 18.3)
• Apple visionOS (versions prior to 2.3)

Discovery Timeline

• January 27, 2025 - CVE-2025-24131 published to NVD
• November 3, 2025 - Last updated in NVD database

Technical Details for CVE-2025-24131

Vulnerability Analysis

This vulnerability is classified under CWE-120 (Buffer Copy without Checking Size of Input), indicating a classic buffer overflow condition where data is copied to a buffer without properly validating that the input size fits within the allocated buffer space. The vulnerability requires an attacker to have a privileged position on the network to exploit the flaw, though once in position, the attack can be executed without user interaction.

The attack vector is network-based, meaning an attacker can reach the vulnerable component over the network. The exploitation does not require user interaction and can be performed with low complexity once the attacker has obtained the necessary privileged access. The impact is limited to availability, with no effect on confidentiality or integrity of data.

Root Cause

The root cause of CVE-2025-24131 lies in improper memory handling within Apple's operating system kernel or system services. The vulnerability appears to be related to buffer overflow conditions where input data is copied to memory without adequate size validation. When exploited, this causes memory corruption that leads to service disruption or system crashes rather than code execution.

Attack Vector

The attack requires an adversary to have a privileged network position, such as man-in-the-middle capability or access to network infrastructure. From this position, the attacker can send specially crafted data that triggers the memory handling flaw. The vulnerability is exploitable over the network without requiring any user interaction, making it particularly dangerous in environments where attackers may have compromised network infrastructure.

The attack mechanism involves sending malformed or oversized data to a system service that fails to properly validate buffer boundaries before processing. This results in memory corruption that crashes the affected service or system component, causing denial of service.

Detection Methods for CVE-2025-24131

Indicators of Compromise

• Unexpected system crashes or kernel panics on Apple devices
• Repeated service restarts for system-level processes
• Anomalous network traffic patterns targeting Apple devices from privileged network positions
• System log entries indicating memory-related errors or buffer overflow conditions

Detection Strategies

• Monitor for unusual crash reports and kernel panic logs across Apple device fleets
• Implement network intrusion detection rules to identify malformed traffic targeting Apple services
• Deploy endpoint detection and response (EDR) solutions capable of detecting memory corruption attempts
• Review Mobile Device Management (MDM) logs for patterns of device instability

Monitoring Recommendations

• Enable crash reporting and centralized log collection for all managed Apple devices
• Configure alerting for repeated system service crashes within short time windows
• Monitor network traffic for anomalous patterns from devices with elevated network privileges
• Establish baseline system stability metrics to detect deviations indicating potential exploitation

How to Mitigate CVE-2025-24131

Immediate Actions Required

• Update all affected Apple devices to the patched versions immediately
• Prioritize updating devices in environments where attackers may have privileged network access
• Review network architecture to identify and monitor privileged network positions
• Temporarily isolate unpatched devices from network segments with elevated risk

Patch Information

Apple has released security updates that address this vulnerability through improved memory handling. Administrators should apply the following updates:

• iOS 18.3 and iPadOS 18.3 - See Apple Support Advisory #122066
• macOS Sequoia 15.3 - See Apple Support Advisory #122071
• watchOS 11.3 - See Apple Support Advisory #122072
• tvOS 18.3 - See Apple Support Advisory #122068
• visionOS 2.3 - See Apple Support Advisory #122073

Additional technical details are available through the Full Disclosure mailing list archives.

Workarounds

• Implement network segmentation to limit attacker access to privileged network positions
• Deploy network monitoring to detect and block suspicious traffic patterns
• Use MDM solutions to enforce security policies and monitor device health
• Consider temporarily disabling non-essential network services on unpatched devices until updates can be applied