CVE-2016-4589

WebKit in Apple iOS before 9.3.3, Safari before 9.1.2, and tvOS before 9.2.2 allows remote...

8.8 HighFix available

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-2016-4622, CVE-2016-4623, and CVE-2016-4624.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.82%Down 0.2 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2016-4589
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-4589
Updated: 2026-11-02

EUVDEUVD-2016-5575 No score

Record: EUVD-2016-5575
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vvf3-m43m-fjm2 8.8

WebKit in Apple iOS before 9.3.3, Safari before 9.1.2, and tvOS before 9.2.2 allows remote...

Record: GHSA-vvf3-m43m-fjm2
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-4589 8.8

Record: UBUNTU-CVE-2016-4589
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUSN-3079-1 No score

webkit2gtk vulnerabilities

A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Record: USN-3079-1
Updated: 2026-11-02

Affected products

apple webkit

Affected packages

Affected packages
Package	Affected	Fixed
`webkit2gtk` Ubuntu:16.04:LTS	before 2.12.5-0ubuntu0.16.04.1, plus listed versions 2.8.5+dfsg1-32.10.3+dfsg1-12.10.4+dfsg1-12.10.5-12.10.6-12.10.6-1ubuntu12.10.8-1ubuntu12.10.9-1ubuntu1	2.12.5-0ubuntu0.16.04.1
`qtwebkit-opensource-src` Ubuntu:16.04:LTS	All versions, plus listed versions 5.4.2+dfsg-1ubuntu2.15.5.1+dfsg-2ubuntu1	None known
`qtwebkit-source` Ubuntu:16.04:LTS	All versions, plus listed versions 2.3.2-0ubuntu102.3.2-0ubuntu11	None known
`webkitgtk` Ubuntu:16.04:LTS	All versions, plus listed versions 2.4.9-2ubuntu22.4.10-0ubuntu12.4.11-0ubuntu0.1	None known
`webkit2gtk` Ubuntu:16.04:LTS From an advisory covering 16 CVEs	before 2.12.5-0ubuntu0.16.04.1, plus listed versions 2.8.5+dfsg1-32.10.3+dfsg1-12.10.4+dfsg1-12.10.5-12.10.6-12.10.6-1ubuntu12.10.8-1ubuntu12.10.9-1ubuntu1	2.12.5-0ubuntu0.16.04.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-4589 is a high vulnerability (CVSS 8.8) in Apple Webkit, published July 21, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.82%, the 86th percentile. Fixed in webkit2gtk 2.12.5-0ubuntu0.16.04.1.

References

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