Description
WebKit in Apple iOS before 9.3.3, Safari before 9.1.2, and tvOS before 9.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, a different vulnerability than CVE-2016-4589, CVE-2016-4623, and CVE-2016-4624.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | webkit2gtk | 2.12.4-1 | — |
| Debian 13 | webkit2gtk | 2.12.4-1 | — |
| Debian 12 | webkit2gtk | 2.12.4-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | webkit2gtk | 2.12.5-0ubuntu0.16.04.1 | USN-3079-1 |
| Ubuntu 16.04 LTS | webkitgtk +2 | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gtk3 | 2.14.2-2.1 | openSUSE-SU-2024:10572-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.4 | webkit2gtk | 2.12.5-r0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 2 repositories
-
saelo/jscpwn ★ 108 · Oct 9, 2016
PoC exploit for CVE-2016-4622
-
hdbreaker/WebKit-CVE-2016-4622 ★ 22 · Apr 7, 2020
My journey through WebKit CVE-2016-4622 Exploitation process
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- USN-3079-1 webkit2gtk vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10572-1 libjavascriptcoregtk-4_0-18-2.14.2-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://www.zerodayinitiative.com/advisories/ZDI-16-485
- APPLE-SA-2016-07-18-4 vendor-advisory
- APPLE-SA-2016-07-18-2 vendor-advisory
- 91830 vdb-entry
- https://support.apple.com/HT206900
- 1036343 vdb-entry
- http://packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
- 20160825 WebKitGTK+ Security Advisory WSA-2016-0005 mailing-list
- http://www.zerodayinitiative.com/advisories/ZDI-16-486
- https://support.apple.com/HT206905
- https://support.apple.com/HT206902
- APPLE-SA-2016-07-18-5 vendor-advisory