---
title: "CVE-2016-4728\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2016-4728?format=md
keywords: index, follow
---

# CVE-2016-4728

Publication date 25 September 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2016-4728?format=md#impact-score)

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## Description

WebKit in Apple iOS before 10, tvOS before 10, iTunes before 12.5.1 on
Windows, and Safari before 10 mishandles error prototypes, which allows
remote attackers to execute arbitrary code via a crafted web site.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2016-4728?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| qtwebkit-opensource-src | 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Ignored end of standard support |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |
| qtwebkit-source | 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Ignored end of standard support |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Ignored end of life |
| webkit | 16.10 yakkety | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Ignored end of life |
| webkit2gtk | 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Fixed 2.14.2-0ubuntu0.16.04.1 |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |
| webkitgtk | 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Ignored end of standard support |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

webkit receives limited support. For details, see
https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit
webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.8 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4728)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-4728)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-4728)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-4728)

### Related Ubuntu Security Notices (USN)

+ [USN-3166-1](https://usn.ubuntu.com/USN-3166-1)
+ WebKitGTK+ vulnerabilities
+ 10 January 2017

### Other references

* <https://webkitgtk.org/security/WSA-2016-0006.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-4728>