CVE-2016-9073: High severity Mozilla Firefox vulnerability

Published Nov 15, 2016
·
Updated

WebExtensions can bypass security checks to load privileged URLs and potentially escape the WebExtension sandbox.

Affected Software

2 affected componentsFixes available
Mozilla Firefox<50
50
Mozilla Firefox<50.0

Event History

Nov 15, 2016
CVE Published
12:00 AM
Jun 11, 2018
CVE Published
via MITRE·09:00 PM
Data Sourced
via MITRE·09:00 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the vulnerability ID of this security issue?

The vulnerability ID of this security issue is CVE-2016-9073.

2

Which software is affected by this vulnerability?

This vulnerability affects Firefox versions below 50.

3

How severe is CVE-2016-9073?

CVE-2016-9073 has a severity score of 7.5 (high).

4

What can an attacker potentially do with this vulnerability?

An attacker can potentially load privileged URLs and escape the WebExtension sandbox.

5

Are there any references for additional information on this vulnerability?

Yes, you can find more information about CVE-2016-9073 at the following references: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1289273), [Mozilla Security Advisories](https://www.mozilla.org/en-US/security/advisories/mfsa2016-89/), [SecurityFocus](http://www.securityfocus.com/bid/94337).

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203