8.8
CWE
416
Advisory Published
Updated

CVE-2016-5259: 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
Mozilla Firefox<=47.0.1
Mozilla Firefox ESR=45.1.0
Mozilla Firefox ESR=45.1.1
Mozilla Firefox ESR=45.2.0
Mozilla Firefox ESR=45.3.0
Oracle Linux=5.0
Oracle Linux=6
Oracle Linux=7
Mozilla Firefox=45.1.0
Mozilla Firefox=45.1.1
Mozilla Firefox=45.2.0
Mozilla Firefox=45.3.0
debian/firefox
133.0.3-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.5.0esr-1~deb11u1
128.3.1esr-1~deb12u1
128.5.0esr-1~deb12u1
128.5.0esr-1
128.5.1esr-1

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Frequently Asked Questions

  • What is CVE-2016-5259?

    CVE-2016-5259 is a use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox.

  • How does CVE-2016-5259 affect Mozilla Firefox?

    CVE-2016-5259 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.

  • What is the severity of CVE-2016-5259?

    CVE-2016-5259 has a severity rating of 8.8 (High).

  • How can I fix CVE-2016-5259?

    To fix CVE-2016-5259, you should update Mozilla Firefox to version 48.0 or later.

  • Where can I find more information about CVE-2016-5259?

    You can find more information about CVE-2016-5259 on the CVE website (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5259), the Mozilla security advisories (https://www.mozilla.org/en-US/security/advisories/mfsa2016-73/), and the Bugzilla entry (https://bugzilla.mozilla.org/show_bug.cgi?id=1282992).

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