HTTP/2 Control Frame DoS (MadeYouReset)
CVE-2025-54500 Published on August 13, 2025
HTTP/2 Vulnerability
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 Technical Support (EoTS) are not evaluated.
Vulnerability Analysis
CVE-2025-54500 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2025-54500
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Affected Versions
F5 BIG-IP:- Version 17.5.0 and below * is affected.
- Version 17.1.0 and below * is affected.
- Version 16.1.0 and below * is affected.
- Version 15.1.0 and below * is affected.
- Version 20.3.0 and below * is affected.
- Version 2.0.0 and below * is affected.
- Version 1.7.0 and below * is affected.
- Version 2.0.0 and below * is affected.
- Version 1.1.0 and below * is affected.
- Version 2.0.0 and below * is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.