This update for MozillaFirefox fixes the following issues: - Firefox Extended Support Release 78.6.0 ESR * Fixed: Various stability, functionality, and security fixes MFSA 2020-55 * CVE-2020-16042 Operations on a BigInt could have caused uninitialized memory to be exposed * CVE-2020-26971 Heap buffer overflow in WebGL * CVE-2020-26973 CSS Sanitizer performed incorrect sanitization * CVE-2020-2 ...