Buffer overflow in WebKitGTK+ and WPE WebKit - CVE-2025-46298

Vulnerability identifier: #VU121150

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-46298

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and perform a denial of service attack. 

WebKitGTK+
WPE WebKit
macOS
iPadOS
Apple iOS
tvOS
visionOS
watchOS
Apple Safari

Install update from vendor's website.

macOS - update to 26.2 25C56
Apple Safari - update to 26.2
iPadOS - update to 26.2 23C55
Apple iOS - update to 26.2 23C55
tvOS - update to 26.2 23K54
visionOS - update to 26.2
watchOS - update to 26.2 23S303

• https://support.apple.com/en-us/125886
• https://www.zerodayinitiative.com/advisories/ZDI-26-057/

• Two vulnerabilities in WebKitGTK+ and WPE WebKit
• Multiple vulnerabilities in Apple macOS Tahoe
• Multiple vulnerabilities in Apple tvOS
• Multiple vulnerabilities in Safari
• Multiple vulnerabilities in Apple visionOS
• Multiple vulnerabilities in Apple iOS 26 and iPadOS 26
• Multiple vulnerabilities in Apple watchOS