CVE-2025-24188
📋 TL;DR
This CVE describes a logic flaw in Safari that could be exploited by malicious web content to cause unexpected crashes. The vulnerability affects Safari users on macOS, potentially leading to denial of service. Apple has addressed this issue in Safari 18.6 and macOS Sequoia 15.6.
💻 Affected Systems
- Safari
📦 What is this software?
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Safari by Apple
⚠️ Risk & Real-World Impact
Worst Case
An attacker could craft a malicious webpage that crashes Safari when visited, causing denial of service and potential loss of unsaved work.
Likely Case
Most exploitation would result in Safari crashing when visiting malicious websites, requiring users to restart the browser.
If Mitigated
With proper patching, the vulnerability is eliminated and Safari functions normally even when processing previously malicious content.
🎯 Exploit Status
Exploitation requires user interaction (visiting a malicious website) but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Safari 18.6, macOS Sequoia 15.6
Vendor Advisory: https://support.apple.com/en-us/124149
Restart Required: Yes
Instructions:
1. Open System Settings on macOS. 2. Go to General > Software Update. 3. Install any available updates for macOS and Safari. 4. Restart your computer if prompted.
🔧 Temporary Workarounds
Use alternative browser
allTemporarily switch to a different web browser until Safari is patched.
Disable JavaScript
allDisable JavaScript in Safari settings to potentially mitigate exploitation, though this will break many websites.
🧯 If You Can't Patch
- Implement web filtering to block known malicious domains
- Educate users to avoid suspicious websites and links
🔍 How to Verify
Check if Vulnerable:
Check Safari version: Open Safari > Safari menu > About Safari. If version is below 18.6, the system is vulnerable.Check Version:
safari_version=$(defaults read /Applications/Safari.app/Contents/Info.plist CFBundleShortVersionString); echo $safari_versionVerify Fix Applied:
Verify Safari version is 18.6 or higher and macOS version is 15.6 or higher.📡 Detection & Monitoring
Log Indicators:
- Safari crash logs in Console.app
- Unexpected Safari termination events
Network Indicators:
- Traffic to known malicious domains hosting exploit code
SIEM Query:
source="*safari*" AND (event="crash" OR event="terminated")