https://www.mozilla.org/en-US/firefox/50.0.2/releasenotes/
https://www.mozilla.org/en-US/thunderbird/45.5.1/releasenotes/
Firefox SVG Animation Remote Code Execution - Mozilla Foundation Security Advisory 2016-92
FIXED IN
- Firefox 50.0.2
- Firefox ESR 45.5.1
- Thunderbird 45.5.1
追記
https://www.mozilla.org/en-US/firefox/android/50.0.2/releasenotes/