Actively exploited in the wild
Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
Mozilla - Firefox, Firefox ESR, and Thunderbird · Listed in the CISA KEV since 2023-06-22. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2016-9079
HighCVSS 7.5KEVSummary
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.
Risk Assessment
The vulnerability is actively exploited in the wild, potentially leading to remote code execution and system compromise.
Recommendation
Update Firefox to version 50.0.2 or later, Firefox ESR to 45.5.1 or later, and Thunderbird to 45.5.1 or later.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS