About the security content of Safari 18.5

This document describes the security content of Safari 18.5.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security releases page.

Apple security documents reference vulnerabilities by CVE-ID when possible.

For more information about security, see the Apple Product Security page.

Safari 18.5

Safari

Available for: macOS Ventura and macOS Sonoma

Impact: A website may be able to spoof the domain name in the title of a pop-up window

Description: A spoofing issue was addressed with improved truncation when displaying the fully qualified domain name

CVE-2025-31266: @RenwaX23

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: A type confusion issue could lead to memory corruption

Description: This issue was addressed with improved handling of floats.

CVE-2025-24213: Google V8 Security Team

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: Processing maliciously crafted web content may lead to memory corruption

Description: The issue was addressed with improved checks.

CVE-2025-31223: Andreas Jaegersberger & Ro Achterberg of Nosebeard Labs

CVE-2025-31238: wac working with Trend Micro Zero Day Initiative

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: Processing maliciously crafted web content may lead to memory corruption

Description: The issue was addressed with improved memory handling.

CVE-2025-24223: rheza (@ginggilBesel), Edouard Bochin (@le_douds) and Tao Yan (@Ga1ois) of Palo Alto Networks

CVE-2025-31204: Nan Wang(@eternalsakura13)

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

Description: The issue was addressed with improved input validation.

CVE-2025-31217: Ignacio Sanmillan (@ulexec)

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: Processing maliciously crafted web content may lead to an unexpected process crash

Description: The issue was addressed with improved checks.

CVE-2025-31215: Jiming Wang and Jikai Ren

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

Description: A type confusion issue was addressed with improved state handling.

CVE-2025-31206: Yuhao Hu, Yan Kang, Chenggang Wu, Xiaojie Wei

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: A malicious website may exfiltrate data cross-origin

Description: The issue was addressed with improved checks.

CVE-2025-31205: Ivan Fratric of Google Project Zero

WebKit

Available for: macOS Ventura and macOS Sonoma

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

Description: This issue was addressed with improved memory handling.

CVE-2025-31257: Juergen Schmied of Lynck GmbH

Additional recognition

Safari

We would like to acknowledge Akash Labade, Narendra Bhati, Manager of Cyber Security at Suma Soft Pvt. Ltd, Pune (India) for their assistance.

WebKit

We would like to acknowledge Mike Dougherty and Daniel White of Google Chrome and an anonymous researcher for their assistance.