High · published October 15, 2025
⚡ An unexplained wave of traffic can crash your Traffic Management Microkernel (TMM)! This happens when your virtual server uses the ePVA feature — a surprisingly sneaky pitfall for BIG-IP platforms. 🔥 Think of it as a busy restaurant kitchen that gets overwhelmed by unexpected orders during peak hours, causing the chef to walk out in frustration. Without the ePVA feature managing the traffic smoothly, your server can face similar meltdowns under pressure. If this vulnerability is exploited, the TMM could terminate unexpectedly, leading to potential downtime for your applications. This means users could experience service disruptions, which can be absolutely devastating for business operations and customer trust.
Think of it as a busy restaurant kitchen that gets overwhelmed by unexpected orders during peak hours, causing the chef to walk out in frustration. Without the ePVA feature managing the traffic smoothly, your server can face similar meltdowns under pressure. This vulnerability arises when certain BIG-IP platforms utilizing the ePVA feature are overwhelmed by undisclosed traffic, causing the TMM to crash without warning. It's essential to understand which platforms have the ePVA chip to assess risk levels adequately.
If this vulnerability is exploited, the TMM could terminate unexpectedly, leading to potential downtime for your applications. This means users could experience service disruptions, which can be absolutely devastating for business operations and customer trust. To protect against this vulnerability, check which BIG-IP platforms have the ePVA chip as detailed in K12837. Ensure you are running a supported software version, as those that have reached End of Technical Support (EoTS) are not evaluated. Consider implementing traffic monitoring to catch unusual patterns early. You've got this! By staying informed and proactive, you can keep your systems running smoothly and secure. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| f5/big-ip_access_policy_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_advanced_firewall_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_advanced_web_application_firewall | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_analytics | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_application_acceleration_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_application_security_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_application_visibility_and_reporting | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_automation_toolchain | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_carrier-grade_nat | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_container_ingress_services | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_ddos_hybrid_defender | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_domain_name_system | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_edge_gateway | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_fraud_protection_service | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_global_traffic_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_link_controller | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_local_traffic_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_policy_enforcement_manager | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_ssl_orchestrator | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_webaccelerator | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_websafe | ≥ 15.1.0, < 15.1.10.8 | 15.1.10.8 |
| f5/big-ip_access_policy_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_advanced_firewall_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_advanced_web_application_firewall | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_analytics | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_application_acceleration_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_application_security_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_application_visibility_and_reporting | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_automation_toolchain | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_carrier-grade_nat | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_container_ingress_services | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_ddos_hybrid_defender | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_domain_name_system | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_edge_gateway | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_fraud_protection_service | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_global_traffic_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_link_controller | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_local_traffic_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_policy_enforcement_manager | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_ssl_orchestrator | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_webaccelerator | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_websafe | ≥ 16.1.0, < 16.1.6.1 | 16.1.6.1 |
| f5/big-ip_access_policy_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_access_policy_manager | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_advanced_firewall_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_advanced_firewall_manager | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_advanced_web_application_firewall | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_advanced_web_application_firewall | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_analytics | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_analytics | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_application_acceleration_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_application_acceleration_manager | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_application_security_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_application_security_manager | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_application_visibility_and_reporting | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_application_visibility_and_reporting | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_automation_toolchain | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_automation_toolchain | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_carrier-grade_nat | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_carrier-grade_nat | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_container_ingress_services | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_container_ingress_services | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_ddos_hybrid_defender | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_ddos_hybrid_defender | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_domain_name_system | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_domain_name_system | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_edge_gateway | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_edge_gateway | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_fraud_protection_service | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_fraud_protection_service | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_global_traffic_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_link_controller | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_link_controller | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_local_traffic_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_local_traffic_manager | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_policy_enforcement_manager | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_policy_enforcement_manager | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_ssl_orchestrator | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_ssl_orchestrator | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_webaccelerator | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_webaccelerator | ≥ 17.5.0, ≤ 17.5.1 | — |
| f5/big-ip_websafe | ≥ 17.1.0, < 17.1.3 | 17.1.3 |
| f5/big-ip_websafe | ≥ 17.5.0, ≤ 17.5.1 | — |