Description
When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.
Impact: System performance can degrade until the TMM process is either forced to restart or is manually restarted. This vulnerability allows a remote, unauthenticated attacker to cause a degradation of service that can lead to a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| F5 | BIG-IP | >= 21.1.0, < 21.1.0.1; >= 21.0.0, < 21.0.0.3; >= 17.5.0, < 17.5.1.8; >= 17.1.0, < 17.1.3.4 |
| F5 | BIG-IP Next for Kubernetes | >= 2.3.0, < 2.3.2; >= 2.0.0, < 2.2.3 |
| F5 | BIG-IP Next SPK | >= 1.9.0, < *; >= 1.7.0, < 1.7.18 |
| F5 | BIG-IP Next CNF | >= 2.3.0, < 2.3.2; >= 2.0.0, < 2.2.3; >= 1.1.0, < 1.4.3 |
References
- https://my.f5.com/manage/s/article/K000162231Vendor Advisory
Timeline
- Published
- Jul 15, 2026
- Last modified
- Aug 6, 2026
- NVD status
- Analyzed