Mozilla has released an emergency update for its Firefox browser that addresses two critical security vulnerabilities that cybercriminals have actively exploited in the wild as zero days.
Both are use-after-free bugs, which are memory-corruption issues that occur when an application continues to try to use a chunk of memory that was assigned to it, after said chunk was freed up for use by a different application. This kind of problem can lead to remote code execution (RCE), data corruption and system crashes.