CVE-2024-39778 8.7 high EPSS 0.5%
High (8.7) in f5. EPSS 0.5% chance of exploitation in the next 30 days.
When a stateless virtual server is configured on BIG-IP system with a High-Speed Bridge (HSB), undisclosed requests can cause TMM to terminate.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
CVSS 4.0 8.7 high CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:LEnable JavaScript to see the metric table and diagram.
CVSS 3.1 7.5 high CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HEnable JavaScript to see the metric table and diagram.
EPSS 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWE CWE-702
Published 2024-08-14
Modified 2026-06-17
Record from the NVD, synced 2026-10-19 Affected f5:big-ip_access_policy_manager f5:big-ip_advanced_firewall_manager f5:big-ip_advanced_web_application_firewall f5:big-ip_analytics f5:big-ip_application_acceleration_manager f5:big-ip_application_security_manager f5:big-ip_application_visibility_and_reporting f5:big-ip_automation_toolchain f5:big-ip_carrier-grade_nat f5:big-ip_container_ingress_services f5:big-ip_ddos_hybrid_defender f5:big-ip_domain_name_system f5:big-ip_edge_gateway f5:big-ip_fraud_protection_service f5:big-ip_global_traffic_manager f5:big-ip_link_controller f5:big-ip_local_traffic_manager f5:big-ip_policy_enforcement_manager f5:big-ip_ssl_orchestrator f5:big-ip_webaccelerator f5:big-ip_websafe References Check your stack JSON