Vulnerability Intelligence Report
Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
CVE-2016-9079
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.
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
EPSS Probability:87.92%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416 Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Mozilla | Firefox | unspecified < 50.0.2 (affected) |
| Mozilla | Firefox ESR | unspecified < 45.5.1 (affected) |
| Mozilla | Thunderbird | unspecified < 45.5.1 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Mozilla Corporation · Vendor · USA |
| Reserved | 2016-10-27T00:00:00 |
| Published | 2018-06-11T21:00:00 |
| Patch Date | 2016-11-30 |
| Last Updated | 2025-10-21T23:45:50 |
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