CWE
416
Advisory Published
Updated

CVE-2016-5254: Use After Free

First published: Fri Aug 05 2016(Updated: )

Last updated 24 July 2024

Credit: security@mozilla.org security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Firefox<=47.0.1
Firefox=45.1.0
Firefox=45.1.1
Firefox=45.2.0
Firefox=45.3.0
Oracle Linux=5.0
Oracle Linux=6
Oracle Linux=7
Firefox ESR=45.1.0
Firefox ESR=45.1.1
Firefox ESR=45.2.0
Firefox ESR=45.3.0
debian/firefox
137.0-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.9.0esr-1~deb11u1
128.8.0esr-1~deb12u1
128.9.0esr-1~deb12u1
128.8.0esr-1
128.9.0esr-2

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is CVE-2016-5254?

    CVE-2016-5254 is a use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3.

  • How severe is CVE-2016-5254?

    CVE-2016-5254 has a severity rating of 9.8 (critical).

  • How can CVE-2016-5254 be exploited?

    CVE-2016-5254 can be exploited by attackers to execute arbitrary code or cause a denial of service by leveraging keyboard access to use the Alt key.

  • Which versions of Mozilla Firefox are affected by CVE-2016-5254?

    Mozilla Firefox versions before 48.0 and Firefox ESR 45.x before 45.3 are affected by CVE-2016-5254.

  • Where can I find more information about CVE-2016-5254?

    You can find more information about CVE-2016-5254 at the following references: 1. [CVE-2016-5254 on MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5254) 2. [Mozilla Security Advisory MFSΔ](https://www.mozilla.org/en-US/security/advisories/mfsa2016-70/) 3. [Bugzilla Mozilla - Issue 1266963](https://bugzilla.mozilla.org/show_bug.cgi?id=1266963)

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.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203