The earliest recollection of this bug is traced back to PAN-OS 11.1.10-h5 - May 15, 2026. This bug is fixed in PAN-OS versions 11.2.10, 11.1.11, 11.1.10-h7, 11.1.6-h19, 11.1.10-h5, 11.2.11, 11.2.7-h4, 12.1.5. Fixed an issue where the firewall experienced high disk space utilization, which caused the firewall to become non-functional. ( PA-7000 Series with Log Forwarding Card only ) When the firewall is configured to forward logs to an external log collector or Strata Logging Service, the firewall root partition may reach high disk utilization, which can cause the firewall to become non-functional. This occurs when the log collector is temporarily unavailable or unable to process logs at the rate the firewall is sending them. Workaround: To help prevent this issue, ensure network connectivity between the firewall and log collector is stable and verify that the log collector has sufficient capacity to handle the volume of logs generated by your deployment. For more information: https://docs.paloaltonetworks.com/ngfw/release-notes/12-1/pan-os-12-1-4-known-and-addressed-issues/pan-os-12-1-4-known-issues https://docs.paloaltonetworks.com/ngfw/release-notes/12-1/pan-os-12-1-5-known-and-addressed-issues/pan-os-12-1-5-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-10-known-and-addressed-issues/pan-os-11-1-10-h5-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-10-known-and-addressed-issues/pan-os-11-1-10-h7-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-11-known-and-addressed-issues/pan-os-11-1-11-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-6-known-and-addressed-issues/pan-os-11-1-6-h19-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-10-known-and-addressed-issues/pan-os-11-2-10-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-11-known-and-addressed-issues/pan-os-11-2-11-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-7-known-and-addressed-issues/pan-os-11-2-7-h4-addressed-issues