BugZero | Cisco BugID CSCwc10241 - Temporary HA split-brain following upgrade or devi...

Loading...

Operational Defect Database

A free repository of operational (non-security) bugs centralized through custom integrations with leading IT vendors.

Product

Enterprise platform
Bug Scrub Advisor
Operational Risk Scoring
Vendor Integrations

Company

Plans
Value Guide
About
Contact us
Legal

Resources

Blog
ServiceNow App
Trust Center
Risk Management
NIST
DORA

Operational Defect Database

A free repository of operational (non-security) bugs centralized through custom integrations with leading IT vendors.

Product

Enterprise platform
Bug Scrub Advisor
Operational Risk Scoring
Vendor Integrations

Company

Plans
Value Guide
About
Contact us
Legal

Resources

Blog
ServiceNow App
Trust Center
Risk Management
NIST
DORA

©2025 BugZero. All Rights Reserved.

Privacy Policy Terms of Service

BugZero | Cisco BugID CSCwc10241 - Temporary HA split-brain following upgrade or devi...

ODD
Cisco
CSCwc10241

Cisco - Defect ID: CSCwc10241

Temporary HA split-brain following upgrade or device reboot

ODD
Cisco
CSCwc10241

Cisco - Defect ID: CSCwc10241

Temporary HA split-brain following upgrade or device reboot

Last updated on October 15th, 2025

BugZero Risk Score
7.8 High

Overall: 7.8

Severity: 8.2

Lifecycle: 9.1

Popularity: 5.1

What is the BugZero Risk Score?

Cisco Integration

Learn more about where this data comes from

Cisco Integration

Bug Scrub Advisor

Streamline upgrades with automated vendor bug scrubs

Bug Scrub Advisor

BugZero Enterprise

Wish you caught this bug sooner? Get proactive today.

BugZero Enterprise

Bug Details

Views: 3

Description

Symptom

A temporary split brain (active-active) scenario may occur on ASA or FTD firewalls following a device reboot (including immediately after upgrades to an affected release)

Conditions

- Utilizing High availability on ASA or FTD - Running software version 9.18.2+ ASA or FTD 7.2.1 - Following a reboot of the device

Workaround

None at this time

Further Problem Description

Change history

2025-10-15 Added: 9.12.4.67, 9.14.4.24, 9.16.4.57, 9.16.4.61, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.16.4.76, 9.16.4.82, 9.16.4.84, 9.16.4.85, 9.17.1.39, 9.17.1.45, 9.17.1.46, 9.18.2, 9.18.2.5

Relevant Products

Click on a version to see all relevant bugs

Affected versions:9.12.4.67, 9.14.4.24, 9.16.4.57, 9.16.4.61, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.16.4.76, 9.16.4.82, 9.16.4.84, 9.16.4.85, 9.17.1.39, 9.17.1.45, 9.17.1.46, 9.18.2, 9.18.2.5

Fixed versions: 9.18.2.7, 9.18.2.8, 9.18.3, 9.18.3.39, 9.18.3.46, 9.18.3.53, 9.18.3.55, 9.18.3.56, 9.18.4, 9.18.4.22, 9.18.4.24, 9.18.4.29, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.18.4.5, 9.18.4.50, 9.18.4.52, 9.18.4.53, 9.18.4.57, 9.18.4.66, 9.18.4.67, 9.18.4.68, 9.18.4.8, 9.19.1, 9.19.1.12, 9.19.1.18, 9.19.1.22, 9.19.1.24, 9.19.1.27, 9.19.1.28, 9.19.1.31, 9.19.1.37, 9.19.1.38, 9.19.1.42, 9.19.1.5, 9.19.1.9, 9.20.1, 9.20.1.5, 9.20.2, 9.20.2.10, 9.20.2.21, 9.20.2.22, 9.20.3, 9.20.3.10, 9.20.3.13, 9.20.3.16, 9.20.3.20, 9.20.3.4, 9.20.3.7, 9.20.3.9, 9.20.4, 9.20.4.10, 9.20.4.7, 9.22.1.1, 9.22.1.2, 9.22.1.3, 9.22.1.6, 9.22.2, 9.22.2.13, 9.22.2.14, 9.22.2.4, 9.22.2.9, 9.23.1, 9.23.1.13, 9.23.1.19, 9.23.1.22, 9.23.1.3, 9.23.1.7

Relevant Products

Click on a version to see all relevant bugs

Affected versions:9.12.4.67, 9.14.4.24, 9.16.4.57, 9.16.4.61, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.16.4.76, 9.16.4.82, 9.16.4.84, 9.16.4.85, 9.17.1.39, 9.17.1.45, 9.17.1.46, 9.18.2, 9.18.2.5

Fixed versions: 9.18.2.7, 9.18.2.8, 9.18.3, 9.18.3.39, 9.18.3.46, 9.18.3.53, 9.18.3.55, 9.18.3.56, 9.18.4, 9.18.4.22, 9.18.4.24, 9.18.4.29, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.18.4.5, 9.18.4.50, 9.18.4.52, 9.18.4.53, 9.18.4.57, 9.18.4.66, 9.18.4.67, 9.18.4.68, 9.18.4.8, 9.19.1, 9.19.1.12, 9.19.1.18, 9.19.1.22, 9.19.1.24, 9.19.1.27, 9.19.1.28, 9.19.1.31, 9.19.1.37, 9.19.1.38, 9.19.1.42, 9.19.1.5, 9.19.1.9, 9.20.1, 9.20.1.5, 9.20.2, 9.20.2.10, 9.20.2.21, 9.20.2.22, 9.20.3, 9.20.3.10, 9.20.3.13, 9.20.3.16, 9.20.3.20, 9.20.3.4, 9.20.3.7, 9.20.3.9, 9.20.4, 9.20.4.10, 9.20.4.7, 9.22.1.1, 9.22.1.2, 9.22.1.3, 9.22.1.6, 9.22.2, 9.22.2.13, 9.22.2.14, 9.22.2.4, 9.22.2.9, 9.23.1, 9.23.1.13, 9.23.1.19, 9.23.1.22, 9.23.1.3, 9.23.1.7

Top Cisco Defects

No bugs this month

Ready to prevent the next vendor outage?

Links

Original Vendor Announcement

Cisco Integration

Learn more about where this data comes from

Cisco Integration

Bug Scrub Advisor

Streamline upgrades with automated vendor bug scrubs

Bug Scrub Advisor

BugZero Enterprise

Wish you caught this bug sooner? Get proactive today.

BugZero Enterprise