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HomeTopics 1Application SecurityPatch Now: Palo Alto Warns of Active Exploits Targeting PAN-OS Firewalls

Patch Now: Palo Alto Warns of Active Exploits Targeting PAN-OS Firewalls


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Palo Alto Networks, a leading cybersecurity firm, has released a critical security advisory detailing ongoing exploitation attempts against their PAN-OS firewall software. This vulnerability, tracked as CVE-2024-3400, poses a serious threat to organizations using affected PAN-OS versions.

This article explains the details of the PAN-OS vulnerability, explores the potential consequences of an attack, and offers actionable steps users can take to mitigate the risks.

Understanding the PAN-OS Flaw: GlobalProtect Under Attack

The vulnerability resides within the GlobalProtect component of PAN-OS, a feature enabling secure remote access to corporate networks. Attackers are exploiting a combination of two bugs to potentially gain unauthorized access to firewalls. While Palo Alto hasn’t disclosed the specific technical details to prevent further exploitation, they urge users to patch their systems immediately.

Why This Matters: Potential Consequences of a Breach

A successful exploit of CVE-2024-3400 could have severe consequences for organizations:

  • Lateral Movement: Attackers could gain access to the internal network and move laterally to compromise other systems.
  • Data Theft: Sensitive data stored on the firewall or accessible through it could be exfiltrated.
  • Disruption of Operations: Attackers could disrupt firewall functionality, impacting network security and user access.

10 Steps to Secure Your PAN-OS Firewall:

Here’s what you can do to protect your organization from this critical vulnerability:

  1. Patch Immediately: Apply the latest security patches released by Palo Alto Networks for your specific PAN-OS version (PAN-OS 10.2.9-h1, PAN-OS 11.0.4-h1, or PAN-OS 11.1.2-h3).
  2. Review Security Configuration: Double-check your firewall’s security configuration, ensuring features like GlobalProtect are only enabled if necessary.
  3. Disable Unused Services: Disable any unnecessary services running on the firewall to minimize the attack surface.
  4. Enable Multi-Factor Authentication: Enforce multi-factor authentication for all administrative access to the firewall.
  5. Segment Your Network: Segment your network to limit the potential impact of a breach if it occurs.
  6. Monitor Network Activity: Continuously monitor network activity for suspicious behavior that might indicate an attack.
  7. Educate Users: Educate employees about phishing attempts and social engineering tactics to prevent them from falling victim to these attacks.
  8. Update Firmware Regularly: Keep your PAN-OS software and firmware updated with the latest security patches.
  9. Consider Threat Intelligence: Utilize threat intelligence feeds to stay informed about the latest cyber threats and vulnerabilities.
  10. Incident Response Plan: Ensure you have a well-defined incident response plan in place to address security incidents effectively.


The recent disclosure from Palo Alto Networks highlights the critical importance of timely patching and maintaining robust cybersecurity practices. By following the steps outlined above, organizations can significantly reduce their risk of falling victim to the PAN-OS exploit and safeguard their networks. Remember, cybersecurity is an ongoing process, and vigilance is key to staying ahead of evolving cyber threats. Don’t wait – patch your PAN-OS firewalls today!

Ouaissou DEMBELE
Ouaissou DEMBELEhttps://cybercory.com
Ouaissou DEMBELE is an accomplished cybersecurity professional and the Editor-In-Chief of cybercory.com. He has over 10 years of experience in the field, with a particular focus on Ethical Hacking, Data Security & GRC. Currently, Ouaissou serves as the Co-founder & Chief Information Security Officer (CISO) at Saintynet, a leading provider of IT solutions and services. In this role, he is responsible for managing the company's cybersecurity strategy, ensuring compliance with relevant regulations, and identifying and mitigating potential threats, as well as helping the company customers for better & long term cybersecurity strategy. Prior to his work at Saintynet, Ouaissou held various positions in the IT industry, including as a consultant. He has also served as a speaker and trainer at industry conferences and events, sharing his expertise and insights with fellow professionals. Ouaissou holds a number of certifications in cybersecurity, including the Cisco Certified Network Professional - Security (CCNP Security) and the Certified Ethical Hacker (CEH), ITIL. With his wealth of experience and knowledge, Ouaissou is a valuable member of the cybercory team and a trusted advisor to clients seeking to enhance their cybersecurity posture.


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