# CVE-2024-47498: Junos OS Evolved: QFX5000 Series: Configured MAC learning and move limits are not in effect

> An unauthenticated adjacent attacker can cause denial of service on Juniper QFX5000 switches by exploiting unenforced MAC learning limits.

- **Severity:** High 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Oct 2024
- **Updated:** 11 Oct 2024
- **Also known as:** GHSA-43mx-p8wf-wh27

## What is CVE-2024-47498?

CVE-2024-47498 is a high-severity denial of service vulnerability in Juniper Junos Os Evolved, published on 11 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An Unimplemented or Unsupported Feature in UI vulnerability in the CLI of Juniper Networks Junos OS Evolved on QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

Several configuration statements meant to enforce limits on MAC learning and moves can be configured but do not take effect. This can lead to control plane overload situations which will severely impact the ability of the device to processes legitimate traffic.

This issue affects Junos OS Evolved on QFX5000 Series:

  *  All versions before 21.4R3-S8-EVO,
  *  22.2-EVO versions before 22.2R3-S5-EVO,

  *  22.4-EVO versions before 22.4R3-EVO,
  *  23.2-EVO versions before 23.2R2-EVO.

## Which versions are affected by CVE-2024-47498?

It affects 1 product.


Products: Juniper Junos Os Evolved.

## How do I fix CVE-2024-47498?

No fix has been published for CVE-2024-47498 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-47498 being exploited?

There is no known exploitation of CVE-2024-47498 in the wild and no public exploit code.

## Other vulnerabilities in Juniper Junos Os Evolved

- [CVE-2026-21902](https://insights.sbomify.com/CVE-2026-21902/): Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root (critical 9.3)
- [CVE-2023-28983](https://insights.sbomify.com/CVE-2023-28983/): Junos OS Evolved: Shell Injection vulnerability in the gNOI server (high 8.8)
- [CVE-2025-21599](https://insights.sbomify.com/CVE-2025-21599/): Denial of service in Junos OS Evolved (high 8.7)
- [CVE-2024-47502](https://insights.sbomify.com/CVE-2024-47502/): Junos OS Evolved: TCP session state is not always cleared on the Routing Engine leading to DoS (high 8.7)
- [CVE-2024-39531](https://insights.sbomify.com/CVE-2024-39531/): Junos OS Evolved: ACX 7000 Series: Protocol specific DDoS configuration affects other protocols (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-47498 and fix it if it is affected.

What it is: CVE-2024-47498 is a high-severity denial of service vulnerability in Juniper Junos Os Evolved, published on 11 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-47498 in the wild and no public exploit code.

Affected product: Juniper Junos Os Evolved. 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-2024-47498/ (Markdown: https://insights.sbomify.com/CVE-2024-47498/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-47498
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-47498
- OSV: https://osv.dev/vulnerability/CVE-2024-47498

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-47498/
Summaries are generated and may contain mistakes; the official description above is the record.