CVE-2026-59762

HIGHCVSS 8.7/10EPSS 0.46%

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

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Next Cloud-Native Network Functions>= 1.1.0, < 1.4.3
F5Big-Ip Next Cloud-Native Network Functions>= 2.0.0, < 2.2.3
F5Big-Ip Next Cloud-Native Network Functions2.3.0
F5Big-Ip Next For Kubernetes>= 2.0.0, < 2.2.3
F5Big-Ip Next For Kubernetes2.3.0
F5Big-Ip Next Service Proxy For Kubernetes>= 1.7.0, < 1.7.18
F5Big-Ip Next Service Proxy For Kubernetes>= 1.8.0, <= 1.9.2
F5Big-Ip Next Service Proxy For Kubernetes>= 2.0.0, <= 2.0.3

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-59762?
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.
How severe is CVE-2026-59762?
CVE-2026-59762 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.
How do I fix CVE-2026-59762?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST