Vulnerability in F5 Big-Ip
CVE-2025-61974
When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (37.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- F5 Big-Ip — versions 17.5.0, 17.1.0, 16.1.0
- F5 Big-Ip Next Cloud-Native Network Functions
- 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 For Kubernetes — versions 2.0.0, 2.1.0
- F5 Big-Ip Next Service Proxy For Kubernetes
- 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/K000156733 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-61974?
- CVE-2025-61974 is a high-severity vulnerability in F5 Big-Ip, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2025-10-15.
- How severe is CVE-2025-61974?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-61974 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.