CVE-2025-43493

4.3 MEDIUM

📋 TL;DR

This CVE describes an address bar spoofing vulnerability in Apple web browsers. Visiting a malicious website could allow attackers to display a fake URL in the address bar, tricking users into thinking they're on a legitimate site. This affects users of macOS, iOS, iPadOS, Safari, and visionOS.

💻 Affected Systems

Products:
  • macOS
  • iOS
  • iPadOS
  • Safari
  • visionOS
Versions: Versions before macOS Tahoe 26.1, iOS 26.1, iPadOS 26.1, Safari 26.1, iOS 18.7.2, iPadOS 18.7.2, visionOS 26.1
Operating Systems: macOS, iOS, iPadOS, visionOS
Default Config Vulnerable: ⚠️ Yes
Notes: All default configurations of affected Apple browsers are vulnerable before patching.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Users could be tricked into entering sensitive information (credentials, financial data) on malicious sites that appear legitimate due to spoofed address bars.

🟠

Likely Case

Phishing attacks where users are deceived into interacting with malicious websites that appear to be trusted sites.

🟢

If Mitigated

Users who verify URLs carefully and use additional security measures (like password managers) would be less likely to fall victim.

🌐 Internet-Facing: HIGH
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires user interaction (visiting malicious website) but no authentication.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Tahoe 26.1, iOS 26.1, iPadOS 26.1, Safari 26.1, iOS 18.7.2, iPadOS 18.7.2, visionOS 26.1

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

Restart Required: Yes

Instructions:

1. Open Settings/System Preferences. 2. Navigate to Software Update. 3. Install the latest available update. 4. Restart the device when prompted.

🔧 Temporary Workarounds

Use alternative browsers

all

Temporarily use non-Apple browsers (Chrome, Firefox, Edge) that are not affected by this specific vulnerability.

Disable JavaScript

all

Disabling JavaScript in Safari settings may prevent exploitation but will break many websites.

🧯 If You Can't Patch

  • Educate users to manually verify URLs before entering sensitive information
  • Implement web filtering to block known malicious domains

🔍 How to Verify

Check if Vulnerable:

Check current OS/browser version against affected versions listed in Apple advisories.

Check Version:

macOS: sw_vers; iOS/iPadOS: Settings > General > About; Safari: Safari > About Safari

Verify Fix Applied:

Confirm OS/browser version matches or exceeds patched versions listed in fix_official.patch_version.

📡 Detection & Monitoring

Log Indicators:

  • Unusual website visits from Apple devices
  • User reports of suspicious address bar behavior

Network Indicators:

  • Connections to known malicious domains from Apple devices

SIEM Query:

source="apple-device-logs" AND (event="browser_navigation" OR event="website_visit") AND url CONTAINS suspicious_pattern

🔗 References

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