Buffer overflow in F5 Big-Ip
CVE-2025-41431
When connection mirroring is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate in the standby BIG-IP systems in a traffic group. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (31.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- F5 Big-ip — versions 17.5.0, 17.1.0, 16.1.0
- F5 Big-ip_access_policy_manager — versions 17.1.2
- F5 Big-ip_advanced_firewall_manager — versions 17.1.2
- F5 Big-ip_analytics — versions 17.1.2
- F5 Big-ip_application_acceleration_manager — versions 17.1.2
- F5 Big-ip_application_security_manager — versions 17.1.2
- F5 Big-ip_domain_name_system — versions 17.1.2
- F5 Big-ip_fraud_protection_service — versions 17.1.2
- F5 Big-ip_global_traffic_manager — versions 17.1.2
- F5 Big-ip_link_controller — versions 17.1.2
Weakness classification (CWE)
References
- f5sirt@f5.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-41431?
- CVE-2025-41431 is a high-severity vulnerability in F5 Big-Ip, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2025-05-07.
- How severe is CVE-2025-41431?
- High severity. CVSS v3 base score is 7.5 out of 10.