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TI-2026-26345 Aliases CVE-2026-34019GHSA-996c-hhrm-w2q5

BIG-IP BFD vulnerability

Priority LOW 34CWE-410Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00293 22nd percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): 21.0.0, 17.5.1, 17.1.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
F5BIG-IP17.5.0 to before 17.5.1; 17.1.0 to before 17.1.3; 16.1.0 and later21.0.0, 17.5.1, 17.1.3Patch availableCNA
  • BIG-IP VendorF5 Affected 17.5.0 to before 17.5.1; 17.1.0 to before 17.1.3; 16.1.0 and later Fixed in 21.0.0, 17.5.1, 17.1.3 Patch available CNA

CPE configurations NVD · 63

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
Show 53 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_automation_toolchain:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_carrier-grade_nat:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_container_ingress_services:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_ssl_orchestrator:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*17.1.0 – 17.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_websafe:17.5.0:*:*:*:*:*:*:*17.5.0VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*16.1.0 – 16.1.6VulnerableF5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_automation_toolchain:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_carrier-grade_nat:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_container_ingress_services:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ssl_orchestrator:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* Versions 17.1.0 – 17.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_websafe:17.5.0:*:*:*:*:*:*:* Versions 17.5.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6 Vulnerable ·F5

Remediation

  • Fix · CNA BIG-IP (F5) Fixed in 21.0.0, 17.5.1, 17.1.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34019
  2. 2026-10-03 Alias added: GHSA-996c-hhrm-w2q5

References

Patch 1

  • TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
See all 629 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences