Hackers have exploited two zero-day vulnerabilities in Palo Alto Networks' widely used software, compromising potentially thousands of organizations.The vulnerabilities allow attackers to gain administrator privileges and perform actions with higher root privileges on compromised firewalls.Hackers have already compromised over 2,000 affected firewalls, with the United States being the most affected country.Palo Alto Networks has released patches for the vulnerabilities and urged organizations to patch their systems promptly.