CVE-2026-59762 BIG-IP HTTP/2 vulnerability

High 8.7 Published 15 Jul 2026 Updated 15 Jul 2026

Remote unauthenticated attackers can cause denial of service on F5 BIG-IP systems by exploiting HTTP/2 profile configurations to exhaust memory resources.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-59762?

CVE-2026-59762 is a high-severity denial of service vulnerability in F5 BIG-IP, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-770

Which versions are affected by CVE-2026-59762?

It affects 3 products.

Products include F5 Big-Ip Next Cloud-Native Network Functions, F5 Big-Ip Next for Kubernetes, F5 Big-Ip Next Service Proxy for Kubernetes.

How do I fix CVE-2026-59762?

No fix has been published for CVE-2026-59762 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-59762 being exploited?

There is no known exploitation of CVE-2026-59762 in the wild and no public exploit code.

Sources

Also known as GHSA-3vvh-xmcx-wpgh.