CVE-2026-34019
BIG-IP BFD vulnerability
At a glance Severity MEDIUM 6.3 EPSS EPSS 0.29 % · percentile 22 (2026-10-27) State PUBLISHED Published 2026-05-13 Updated 2026-05-13 Assigner f5 NVD status Analyzed Description When Bidirectional Forwarding Detection (BFD) is configured in Static and Dynamic routing protocols, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to stop processing BFD packets and cause the configured routing protocol to fail over. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Scores Version Score Vector Scored by CVSS 4.0 MEDIUM 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N f5 CVSS 3.1 MEDIUM 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L f5 CVSS 4.0 MEDIUM 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X NVD · f5sirt@f5.com (Secondary) CVSS 3.1 MEDIUM 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L NVD · f5sirt@f5.com (Secondary)
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE) cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_access_policy_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_analytics:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_application_acceleration_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_application_security_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_automation_toolchain:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_carrier-grade_nat:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_container_ingress_services:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_domain_name_system:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_edge_gateway:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_fraud_protection_service:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_global_traffic_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_link_controller:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_local_traffic_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_policy_enforcement_manager:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_ssl_orchestrator:17.5.0:*:*:*:*:*:*:*cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* ≥ 17.1.0 ≤ 17.1.2cpe:2.3:a:f5:big-ip_webaccelerator:17.5.0:*:*:*:*:*:*:*+23 more Affected products Product Versions F5 · BIG-IP unaffected 21.0.0 < * ; affected 17.5.0 < 17.5.1 ; affected 17.1.0 < 17.1.3 ; affected 16.1.0 < *
References
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