Buffer overflow in WPE WebKit and WebKitGTK+ - CVE-2026-43794
Published: August 18, 2026
Vulnerability identifier: #VU143955
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43794
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code on the target system.
Affected software
WPE WebKit
WebKitGTK+
iPadOS
Apple iOS
macOS
Apple Safari
WebKitGTK+
iPadOS
Apple iOS
macOS
Apple Safari
How to mitigate CVE-2026-43794
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