CVE-2020-12387 - Mozilla Firefox Esr, Mozilla Firefox and Mozilla Thunderbird
Critical 8.1
A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Affected software
Mozilla Firefox Esr
Mozilla Firefox
Mozilla Thunderbird