Resource exhaustion in F5 Big-ip
CVE-2025-54500
An HTTP/2 implementation flaw allows a denial-of-service (DoS) that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit (HTTP/2 MadeYouReset Attack). Note: Software versions which have reached End of T…
EPSS: 0.002 (35.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- F5 Big-ip — versions 17.5.0, 17.1.0, 16.1.0
- F5 Big-ip Next — versions 20.3.0
- 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, 1.7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- my.f5.com/manage/s/article/K000152001 (vendor-advisory)
Frequently asked questions
- What is CVE-2025-54500?
- CVE-2025-54500 is a medium-severity vulnerability in F5 Big-ip, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2025-08-13.
- How severe is CVE-2025-54500?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-54500 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.