BugZero | Palo Alto Networks BugID PAN-156766 - Fixed an issue where, after upgrading to PAN-OS 9....

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BugZero | Palo Alto Networks BugID PAN-156766 - Fixed an issue where, after upgrading to PAN-OS 9....

Palo Alto Networks - Defect ID: PAN-156766

Fixed an issue where, after upgrading to PAN-OS 9.1.5, VM-Series firewalls in HA configurations went into a non-functional state due to a virtual machine (VM) license mismatch.

Palo Alto Networks - Defect ID: PAN-156766

Fixed an issue where, after upgrading to PAN-OS 9.1.5, VM-Series firewalls in HA configurations went into a non-functional state due to a virtual machine (VM) license mismatch.

Last updated on Invalid date

BugZero Risk Score
6.3 Medium

Overall: 6.3

Severity: 6.4

Community: 3.7

Lifecycle: 10.0

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Bug Details

Description

The earliest recollection of this bug is traced back to PAN-OS 9.1.11 - July 22, 2025. This bug is fixed in PAN-OS versions 9.1.11. Fixed an issue where, after upgrading to PAN-OS 9.1.5, VM-Series firewalls in HA configurations went into a non-functional state due to a virtual machine (VM) license mismatch. For more information: https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-11-addressed-issues

Change history

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Top Palo Alto Networks Defects

6.3Defect ID: PAN-289383
( PA-800 series firewalls only ) Upgrading firewalls to PAN-OS 11.0 or later causes SFP ports to go non-operational when the firewall uses forced port mode and the connected peer device operates without auto-negotiation. Workaround: Enable auto-negotiation on the connected peer firewall.
6.3Defect ID: PAN-271438
Fixed an issue where the firewall calculated available memory incorrectly on CENTOS devices, which caused the firewall to display high memory usage alerts even when sufficient memory was available.
6.3Defect ID: PAN-281776
Fixed an issue on the Panorama web interface where the error message PPPoEv6 Client Interface cannot be enabled with DHCPv6 client was generated when overriding aggregate interfaces even when no DHCPv6 or PPPoE was configured.
6.3Defect ID: PAN-260661
Fixed an issue where daily email reports generated from the custom report did not display the report details in PDF or CSV files.
6.3Defect ID: PAN-294179
On the page, some commit versions might display incorrect or missing data. Fields such as, , , and might not be visible for some commit versions. Sometimes, commit versions can disappear after a refresh and the commit description field might display corrupted characters.

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OPERATIONAL DEFECT DATABASE

Palo Alto Networks - Defect ID: PAN-156766

Fixed an issue where, after upgrading to PAN-OS 9.1.5, VM-Series firewalls in HA configurations went into a non-functional state due to a virtual machine (VM) license mismatch.

Palo Alto Networks - Defect ID: PAN-156766

Fixed an issue where, after upgrading to PAN-OS 9.1.5, VM-Series firewalls in HA configurations went into a non-functional state due to a virtual machine (VM) license mismatch.

Last updated on Invalid date

BugZero Risk Score6.3 Medium

Bug Details

Links

Top Palo Alto Networks Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.3 Medium