Assessment
Why it matters
EPSS is 0.5%; technical severity is CVSS 8.7.
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.
Who should care
- Teams operating Big-ip Next Cloud-native Network Functions, Big-ip Next For Kubernetes, Big-ip Next Service Proxy For Kubernetes
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether Big-ip Next Cloud-native Network Functions, Big-ip Next For Kubernetes, Big-ip Next Service Proxy For Kubernetes is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- F5 Security advisory K000162231
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Treatment intelligence
Remediation intelligence
Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.
Technical details
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CWE
- CWE-770
- Affected versions
- F5 Big-ip Next Cloud-native Network Functions (Start Including 1.1.0, End Excluding 1.4.3 | Start Including 2.0.0, End Excluding 2.2.3 | Version 2.3.0); F5 Big-ip Next For Kubernetes (Start Including 2.0.0, End Excluding 2.2.3 | Version 2.3.0); F5 Big-ip Next Service Proxy For Kubernetes (Start Including 1.7.0, End Excluding 1.7.18 | Start Including 1.8.0, End Including 1.9.2 | Start Including 2.0.0, End Including 2.0.3)
- Fixed versions
- F5 Big-ip Next Cloud-native Network Functions (Fixed from 1.4.3, 2.2.3); F5 Big-ip Next For Kubernetes (Fixed from 2.2.3); F5 Big-ip Next Service Proxy For Kubernetes (Fixed from 1.7.18)
- Published
- 15 July 2026
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Latest EPSS score: 0.5%
- Signal calculated at 13