Palo Alto Networks warns of DoS bug letting hackers disable firewalls

BleepingComputer

January 15, 2026 at 9:02 AM

Overview

Palo Alto Networks has released a patch for a serious vulnerability that could enable attackers to conduct denial-of-service (DoS) attacks, effectively disabling firewall protections. This flaw allows unauthenticated individuals to exploit the vulnerability, raising concerns for organizations relying on Palo Alto's security products. The ability to disable firewalls poses significant risks, as it could lead to unauthorized access and data breaches. Companies using affected products are urged to apply the patch immediately to safeguard their networks. This incident serves as a reminder of the ongoing challenges in maintaining cybersecurity defenses against evolving threats.

Key Takeaways

Affected Systems: Palo Alto Networks firewalls and related security products
Action Required: Patch the vulnerability using the update provided by Palo Alto Networks.
Timeline: Disclosed on [date not specified]

Original Article Summary

Palo Alto Networks patched a high-severity vulnerability that could allow unauthenticated attackers to disable firewall protections in denial-of-service (DoS) attacks. [...]

Impact

Palo Alto Networks firewalls and related security products

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Disclosed on [date not specified]

Remediation

Patch the vulnerability using the update provided by Palo Alto Networks. Specific patch numbers or versions not mentioned.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Exploit, Vulnerability, Patch, and 1 more.

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