BugZero | Palo Alto Networks BugID PAN-179274 - Fixed an issue on high availability configurations...

Palo Alto Networks - Defect ID: PAN-179274

Fixed an issue on high availability configurations where, after upgrading to PAN-OS 9.1.10, PAN-OS 10.0.6, or PAN-OS 10.1.0, the HA1 and HA1-Backup link stayed down. This issue occurred when the peer firewall IP address was in a different subnet.

Palo Alto Networks - Defect ID: PAN-179274

Fixed an issue on high availability configurations where, after upgrading to PAN-OS 9.1.10, PAN-OS 10.0.6, or PAN-OS 10.1.0, the HA1 and HA1-Backup link stayed down. This issue occurred when the peer firewall IP address was in a different subnet.

Last updated on August 6th, 2025

BugZero Risk Score
9.2 High

Overall: 9.2

Severity: 10.0

Community: 4.6

Lifecycle: 10.0

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Bug Details

Views: 23

Description

Overview

Fixed an issue on high availability configurations where, after upgrading to PAN-OS 9.1.10, PAN-OS 10.0.6, or PAN-OS 10.1.0, the HA1 and HA1-Backup link stayed down. This issue occurred when the peer firewall IP address was in a different subnet.

Impact

HA1/HA1 backup link not coming up

root_cause

Internal routing lookup mechanism didn't work as expected

workaround

No workaround

Change history

No changes to display

2025-07-22 Added: 9.1.10, 10.0.5, 10.1.2, 9.1.6, 9.1.4, 10.0.4, 9.1.5, 10.1.3, 10.1.0, 9.1.0, 10.0.9, 10.1.1, 10.0.3, 10.0.7, 9.1.7, 9.1.3, 9.1.11, 9.1.9, 9.1.2, 10.0.1, 9.1.1, 9.1.8, 10.0.0, 10.0.6, 9.1.12, 10.1.4, 10.0.8, 10.0.2

Relevant Products

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Affected versions:10.1.1, 9.1.5, 10.0.4, 10.1.4, 9.1.2, 9.1.3, 9.1.6, 10.0.3, 10.0.7, 10.0.2, 10.0.5, 10.0.0, 10.0.1, 10.1.0, 9.1.4, 9.1.7, 9.1.8, 10.1.3, 10.0.8, 9.1.9, 10.1.2, 10.0.6, 9.1.1, 9.1.11, 10.0.9, 9.1.0, 9.1.10, 9.1.12

Fixed versions: 10.1.5, 10.0.10, 9.1.13, 10.2.0

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 10.1.5, 10.0.10, 9.1.13, 10.2.0

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Palo Alto Networks - Defect ID: PAN-179274

Fixed an issue on high availability configurations where, after upgrading to PAN-OS 9.1.10, PAN-OS 10.0.6, or PAN-OS 10.1.0, the HA1 and HA1-Backup link stayed down. This issue occurred when the peer firewall IP address was in a different subnet.

Palo Alto Networks - Defect ID: PAN-179274

Fixed an issue on high availability configurations where, after upgrading to PAN-OS 9.1.10, PAN-OS 10.0.6, or PAN-OS 10.1.0, the HA1 and HA1-Backup link stayed down. This issue occurred when the peer firewall IP address was in a different subnet.

Last updated on August 6th, 2025

BugZero Risk Score9.2 High

Bug Details

Overview

Impact

root_cause

workaround

Top Palo Alto Networks Defects

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BugZero Risk Score
9.2 High