F5 Distributed Cloud - Service Degradation - WAF - INC-20260917-515
View the provider incident record →Current answer
F5 Cloud experienced a major incident: F5 Distributed Cloud - Service Degradation - WAF - INC-20260917-515. ServiceAlert observed recovery on Sep 18, 2026.
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Incident Lifecycle
Affected Components
Ashburn (dc12), VA, United States
Sao Paulo, Brazil
Amsterdam, Netherlands
Singapore, Singapore
Sydney, Australia
Dubai, United Arab Emirates
Frankfurt (fr4), Germany
Tokyo, Japan
Melbourne, Australia
Tel Aviv, Israel
Ashburn (b-dc12), VA, United States
Osaka, Japan
Ashburn (c-dc12), VA, United States
Frankfurt (b-fr4), Germany
New York (ny8), NY, United States
London (tn2), United Kingdom
Hong Kong, Asia
Mumbai (mb2), India
London (b-tn2), United Kingdom
New York (b-ny8), NY, United States
San Jose (sv10), CA, United States
Paris (pa2), France
Mumbai (b-mb2), India
Chennai, India
Paris (pa4), France
San Jose (b-sv10), CA, United States
Seattle, WA, United States
Madrid, Spain
Jakarta, Indonesia
Lisbon, Portugal
Toronto, Canada
Seoul, South Korea
Dallas (dal3), TX, United States
Stockholm, Sweden
Dallas (b-dal3), TX, United States
Atlanta, GA, United States
Milan, Italy
Montreal, Canada
Chicago, IL, United States
Querétaro, Mexico
Incident Timeline
Identified
The F5 Distributed Cloud team has identified the root cause behind the false positive alerts being triggered on Web Application Firewall (WAF). We are now diligently working on implementing a fix to address the issue.
Applications remain protected, and WAF security enforcement continues to operate as expected.
We are treating this incident with the highest urgency and will provide further updates as they become available. Please continue to monitor our Statuspage (https://www.f5cloudstatus.com/) for the latest information.
If you are experiencing an impact and require immediate assistance, please contact our Support team at support@cloud.f5.com or call the appropriate regional number listed on our website: https://my.f5.com/manage/s/article/K000135931.
Applications remain protected, and WAF security enforcement continues to operate as expected.
We are treating this incident with the highest urgency and will provide further updates as they become available. Please continue to monitor our Statuspage (https://www.f5cloudstatus.com/) for the latest information.
If you are experiencing an impact and require immediate assistance, please contact our Support team at support@cloud.f5.com or call the appropriate regional number listed on our website: https://my.f5.com/manage/s/article/K000135931.
Sep 17, 2026 at 10:30 PM UTC
Investigating
Impact: We are actively working to resolve an issue causing false-positive security events on our Web Application Firewall (WAF). Please be assured that your applications remain fully protected and security enforcement is active.
Our investigation into the issue affecting WAF is ongoing. We are actively working to resolve an issue causing false-positive security events on our Web Application Firewall (WAF). Please be assured that your applications remain fully protected and security enforcement is active.
Current investigative actions:
Our engineering teams are working to implement a fix at the earliest time possible, and we will share updates here as they progress.
We are treating this incident with the highest urgency and will continue to provide updates as more information becomes available. Please monitor our Statuspage (https://www.f5cloudstatus.com/) for live updates.
If you are experiencing an impact and requires immediate assistance, please contact our Support team at support@cloud.f5.com or call the appropriate regional number listed on our website: https://my.f5.com/manage/s/article/K000135931.
Our investigation into the issue affecting WAF is ongoing. We are actively working to resolve an issue causing false-positive security events on our Web Application Firewall (WAF). Please be assured that your applications remain fully protected and security enforcement is active.
Current investigative actions:
Our engineering teams are working to implement a fix at the earliest time possible, and we will share updates here as they progress.
We are treating this incident with the highest urgency and will continue to provide updates as more information becomes available. Please monitor our Statuspage (https://www.f5cloudstatus.com/) for live updates.
If you are experiencing an impact and requires immediate assistance, please contact our Support team at support@cloud.f5.com or call the appropriate regional number listed on our website: https://my.f5.com/manage/s/article/K000135931.
Sep 17, 2026 at 8:38 PM UTC
Investigating
This advisory is to inform you that we are currently investigating reports of service degradation affecting Global WAF Signature Blocking Regression.
We understand this may be affecting your operations and we are committed to providing transparent and timely updates as more information becomes available. While we gather more information, we recommend monitoring the progress on this site (https://www.f5cloudstatus.com/) for the latest update.
Investigation Status:
• We have identified potential service impact at 6:40 PM UTC
• Our incident response team has been fully mobilized;
• Initial investigation and impact assessment efforts are underway.
Next Steps:
• A detailed incident notification will be provided within 30 minutes;
• Our teams are working to determine the root cause of the incident;
• We will share mitigation steps as soon as they become available.
We appreciate your patience as we work to resolve this situation. If you are experiencing a critical business impact, please contact our support team through your established channels.
Thank you for your continued support and trust in F5.
We understand this may be affecting your operations and we are committed to providing transparent and timely updates as more information becomes available. While we gather more information, we recommend monitoring the progress on this site (https://www.f5cloudstatus.com/) for the latest update.
Investigation Status:
• We have identified potential service impact at 6:40 PM UTC
• Our incident response team has been fully mobilized;
• Initial investigation and impact assessment efforts are underway.
Next Steps:
• A detailed incident notification will be provided within 30 minutes;
• Our teams are working to determine the root cause of the incident;
• We will share mitigation steps as soon as they become available.
We appreciate your patience as we work to resolve this situation. If you are experiencing a critical business impact, please contact our support team through your established channels.
Thank you for your continued support and trust in F5.
Sep 17, 2026 at 7:48 PM UTC
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