Double Free in F5 Big-ip
CVE-2025-61990
When using a multi-bladed platform with more than one blade, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability class: Double Free
EPSS: 0.001 (25.1th 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 Next Cnf — versions 2.0.0, 1.1.0
- F5 Big-ip Next For Kubernetes — versions 2.0.0
- F5 Big-ip Next Spk — versions 2.0.0, 1.9.0, 1.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- my.f5.com/manage/s/article/K000156912 (vendor-advisory)
Frequently asked questions
- What is CVE-2025-61990?
- CVE-2025-61990 is a high-severity vulnerability in F5 Big-ip, classified under Double Free. CVSS score: 7.5/10. Published 2025-10-15.
- How severe is CVE-2025-61990?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-61990 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.