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

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

- **Severity:** High 8.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jul 2026
- **Updated:** 15 Jul 2026
- **Also known as:** GHSA-3vvh-xmcx-wpgh

## 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 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-59762?

It affects 3 products.


Products: 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.

## Is CVE-2026-59762 being exploited?

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

## Other vulnerabilities in F5 BIG-IP

- [CVE-2025-54479](https://insights.sbomify.com/CVE-2025-54479/): BIG-IP PEM vulnerability (high 8.7)
- [CVE-2025-58120](https://insights.sbomify.com/CVE-2025-58120/): BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability (high 8.7)
- [CVE-2025-60016](https://insights.sbomify.com/CVE-2025-60016/): BIG-IP SSL/TLS vulnerability (high 8.7)
- [CVE-2025-61974](https://insights.sbomify.com/CVE-2025-61974/): BIG-IP SSL/TLS vulnerability (high 8.7)
- [CVE-2025-55670](https://insights.sbomify.com/CVE-2025-55670/): BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59762 and fix it if it is affected.

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

Affected product: F5 BIG-IP. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-59762/ (Markdown: https://insights.sbomify.com/CVE-2026-59762/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59762
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59762
- OSV: https://osv.dev/vulnerability/CVE-2026-59762

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59762/
Summaries are generated and may contain mistakes; the official description above is the record.