# CVE-2025-58120: BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability

> Attackers can cause a denial of service by triggering a null dereference in the Traffic Management Microkernel when HTTP/2 Ingress is enabled.

- **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 Oct 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-jg4r-5fpx-73gm

## What is CVE-2025-58120?

CVE-2025-58120 is a high-severity vulnerability in F5 BIG-IP Next CNF, published on 15 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

When HTTP/2 Ingress is configured, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2025-58120?

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-2025-58120?

No fix has been published for CVE-2025-58120 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-58120 being exploited?

There is no known exploitation of CVE-2025-58120 in the wild and no public exploit code.

## Other vulnerabilities in F5 BIG-IP Next CNF

- [CVE-2026-59762](https://insights.sbomify.com/CVE-2026-59762/): BIG-IP HTTP/2 vulnerability (high 8.7)
- [CVE-2025-54479](https://insights.sbomify.com/CVE-2025-54479/): BIG-IP PEM 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-2025-58120 and fix it if it is affected.

What it is: CVE-2025-58120 is a high-severity vulnerability in F5 BIG-IP Next CNF, published on 15 Oct 2025. 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-2025-58120 in the wild and no public exploit code.

Affected product: F5 BIG-IP Next CNF. 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-2025-58120/ (Markdown: https://insights.sbomify.com/CVE-2025-58120/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-58120
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-58120
- OSV: https://osv.dev/vulnerability/CVE-2025-58120

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-58120/
Summaries are generated and may contain mistakes; the official description above is the record.