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Palo Alto Networks patches PAN-OS RCE zero-day exploited in attacks

Event Brief generated 29 s read

Rack-mounted network firewall units, one with an amber warning light.

Written by an AI. It was merged from the source on this page and has not been reviewed by a person.

The short version

  • The flaw is tracked as CVE-2026-0322 and is rated high severity.
  • It is a remote code execution bug in PAN-OS, the firewall operating system.
  • BleepingComputer reports active exploitation against firewalls.

What happened

Palo Alto Networks has released security updates for a high-severity PAN-OS remote code execution zero-day, tracked as CVE-2026-0322. BleepingComputer reports the flaw has been exploited in attacks targeting firewalls. The summary does not list affected versions or patch identifiers.

Why it might matter

Firewalls sit at the network edge, so an exploited flaw there can expose internal networks. Administrators of PAN-OS devices may need to patch quickly.

What we don’t know yet

The sources do not give affected versions, the number of compromised devices, attacker identity, or whether a workaround exists.