CVE-2024-39778

CVE-2024-39778 is a high-severity vulnerability in F5 Big-ip Access Policy Manager with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-702.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v4: 8.7
• EPSS exploit prediction: 0% (38th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2024-38235
• Weakness: CWE-702
• Affected product: F5 Big-ip Access Policy Manager
• Published: 2024-08-14
• Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2024-39778?

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.

How severe is CVE-2024-39778?

CVE-2024-39778 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-39778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39778?

CVE-2024-39778 primarily affects F5 Big-ip Access Policy Manager. In total, 42 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-39778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-39778 have an EU (EUVD) identifier?

Yes. CVE-2024-39778 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38235.

When was CVE-2024-39778 published?

CVE-2024-39778 was published on 2024-08-14 and last updated on 2026-06-17.

References

• https://my.f5.com/manage/s/article/K05710614

Affected products (42)

• cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_access_policy_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_analytics:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_acceleration_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_security_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_automation_toolchain:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_carrier-grade_nat:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_container_ingress_services:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_domain_name_system:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_edge_gateway:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_fraud_protection_service:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_global_traffic_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_link_controller:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_local_traffic_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_policy_enforcement_manager:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_ssl_orchestrator:17.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_webaccelerator:17.1.0:*:*:*:*:*:*:*

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