Buffer overflow in WPE WebKit and WebKitGTK+ - CVE-2026-64779
Published: August 18, 2026
Vulnerability identifier: #VU143958
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-2026-64779
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to crash the browser.
The vulnerability exists due to a boundary error in WebKit Storage. A remote attacker can trick the victim into visiting a specially crafted website and rash the browser.
Affected software
WPE WebKit
WebKitGTK+
iPadOS
Apple iOS
macOS
Apple Safari
WebKitGTK+
iPadOS
Apple iOS
macOS
Apple Safari
How to mitigate CVE-2026-64779
Install updates from vendor's website.
iPadOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
Apple iOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
macOS - update to 26.6.2 25G83
Apple Safari - update to 26.6.1
Apple iOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
macOS - update to 26.6.2 25G83
Apple Safari - update to 26.6.1