CVE-2026-59762
Last modified
CVE-2026-59762 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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. EPSS estimates a 0.46% chance of exploitation in the next 30 days.
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/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Next Cloud-Native Network Functions | >= 1.1.0, < 1.4.3 |
| F5 | Big-Ip Next Cloud-Native Network Functions | >= 2.0.0, < 2.2.3 |
| F5 | Big-Ip Next Cloud-Native Network Functions | 2.3.0 |
| F5 | Big-Ip Next For Kubernetes | >= 2.0.0, < 2.2.3 |
| F5 | Big-Ip Next For Kubernetes | 2.3.0 |
| F5 | Big-Ip Next Service Proxy For Kubernetes | >= 1.7.0, < 1.7.18 |
| F5 | Big-Ip Next Service Proxy For Kubernetes | >= 1.8.0, <= 1.9.2 |
| F5 | Big-Ip Next Service Proxy For Kubernetes | >= 2.0.0, <= 2.0.3 |
References
- https://my.f5.com/manage/s/article/K000162231Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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