Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2016-9079

Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability

HighExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Firefox, Firefox ESR, and Thunderbird, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Jul 13, 2023.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

Description

A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsFixed inSource
FirefoxMozilla< 45.5.1; < 50.0.245.5.1; 50.0.2NVD
Firefox, Firefox ESR, and ThunderbirdMozilla——KEV

Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2016-9079 scored CVSS 7.5: Mozilla Firefox, Firefox ESR, and Thunderbird, Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability

    CISA lists this as exploited in the wild. Unpatched Firefox, Firefox ESR, and Thunderbird systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References