CVE-2025-43507 – This CVE describes a privacy vulnerability in A... (How to Fix)

Q: What is the severity of CVE-2025-43507?

CVE-2025-43507 has a CVSS score of 6.5 (MEDIUM). This CVE describes a privacy vulnerability in Apple operating systems where applications could fingerprint users by accessing sensitive data. The issue affects multiple Apple platforms including iOS, iPadOS, macOS, watchOS, and visionOS. Apple has addressed this by moving sensitive data to prevent unauthorized access.

📋 TL;DR

This CVE describes a privacy vulnerability in Apple operating systems where applications could fingerprint users by accessing sensitive data. The issue affects multiple Apple platforms including iOS, iPadOS, macOS, watchOS, and visionOS. Apple has addressed this by moving sensitive data to prevent unauthorized access.

💻 Affected Systems

Products:

iOS
iPadOS
macOS
watchOS
visionOS

Versions: Versions prior to watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1

Operating Systems: Apple operating systems

Default Config Vulnerable: ⚠️ Yes

Notes: All default configurations of affected Apple operating systems are vulnerable until patched.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

An attacker could create a detailed profile of user behavior, preferences, and device characteristics, potentially leading to targeted attacks, identity tracking, or privacy violations.

🟠

Likely Case

Malicious apps could collect identifiable information about users for advertising, analytics, or profiling purposes without user consent.

🟢

If Mitigated

With proper app sandboxing and security controls, the risk is limited to apps that have already been granted excessive permissions.

🌐 Internet-Facing: LOW

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires a malicious app to be installed on the target device. The app would need to bypass Apple's app review process or be side-loaded.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1

Vendor Advisory: https://support.apple.com/en-us/125632

Restart Required: Yes

Instructions:

1. Open Settings app. 2. Go to General > Software Update. 3. Download and install the latest available update. 4. Restart device when prompted.

🔧 Temporary Workarounds

Restrict App Installation

all

Only install apps from the official App Store and avoid side-loading applications.

Review App Permissions

all

Regularly review and restrict app permissions in device settings.

🧯 If You Can't Patch

Isolate affected devices from sensitive networks and data
Implement strict app installation policies and monitoring

🔍 How to Verify

Check if Vulnerable:

Check device version in Settings > General > About > Software Version

Check Version:

Settings > General > About > Software Version (iOS/iPadOS/watchOS/visionOS) or About This Mac > Software Update (macOS)

Verify Fix Applied:

Verify the installed version matches or exceeds the patched versions listed in the CVE

📡 Detection & Monitoring

Log Indicators:

Unusual app behavior accessing system information
Multiple apps requesting similar sensitive data

Network Indicators:

Apps sending device fingerprinting data to external servers

SIEM Query:

app:access_system_data AND data_type:sensitive AND frequency:high

📊 Metadata

CVE ID: CVE-2025-43507

CVSS v3 Score: 6.5 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE: CWE-276

EPSS Score: 0.05% exploit probability (13.6th percentile)

Published: November 4, 2025

Last Updated: December 17, 2025

🔗 References

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