Decades-old security flaw found in Chrome, Mozilla browsers: What is a 0.0.0.0 day attack?

Cybersecurity researchers have found an underlying security flaw in popular web browsers like Chrome, Safari, and Mozilla that could be used by hackers to gain access to the private networks of businesses and individuals.

Based on the research carried out by Israeli cybersecurity startup Oligo, attackers would be able to access files, messages, credentials, and other data stored on a computer or device that is the “localhost” in a private network.

Fundamentally, the loophole was found in how browsers reroute queries sent to the internet protocol (IP) address 0.0.0.0.