# CVE-2024-47496: Junos OS: MX Series: The PFE will crash on running specific command

> A local low-privileged attacker can crash the Packet Forwarding Engine on Juniper MX Series devices, causing a denial of service.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/R:A`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **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-v4c2-2gfg-qh3v

## What is CVE-2024-47496?

CVE-2024-47496 is a medium-severity vulnerability in Juniper Junos, 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

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS allows a local, low-privileged attacker to cause a Denial-of-Service (DoS).

When a specific command is executed, the pfe crashes. This will cause traffic forwarding to be interrupted until the system self-recovers. Repeated execution will create a sustained DoS condition.

 This issue only affects MX Series devices with Line cards MPC1-MPC9.
This issue affects:
Junos OS on MX Series: 

  *  All versions before 21.4R3-S9, 
  *  from 22.2 before 22.2R3-S5, 
  *  from 22.3 before 22.3R3-S4, 
  *  from 22.4 before 22.4R3-S2, 
  *  from 23.2 before 23.2R2-S1, 
  *  from 23.4 before 23.4R2.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2024-47496?

It affects 1 product.


Products: Juniper Junos.

## How do I fix CVE-2024-47496?

No fix has been published for CVE-2024-47496 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-47496 being exploited?

There is no known exploitation of CVE-2024-47496 in the wild and no public exploit code.

## Other vulnerabilities in Juniper Junos

- [CVE-2023-36845](https://insights.sbomify.com/CVE-2023-36845/): Juniper Junos OS EX Series and SRX Series PHP External Variable Modification (critical 9.8, exploited in the wild)
- [CVE-2020-1631](https://insights.sbomify.com/CVE-2020-1631/): Juniper Junos OS Path Traversal (high 8.8, exploited in the wild)
- [CVE-2025-21590](https://insights.sbomify.com/CVE-2025-21590/): Juniper Junos OS Improper Isolation or Compartmentalization (medium 6.7, exploited in the wild)
- [CVE-2023-36851](https://insights.sbomify.com/CVE-2023-36851/): Juniper Junos OS SRX Series Missing Authentication for Critical Function (medium 5.3, exploited in the wild)
- [CVE-2023-36844](https://insights.sbomify.com/CVE-2023-36844/): Juniper Junos OS EX Series PHP External Variable Modification (medium 5.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-47496 and fix it if it is affected.

What it is: CVE-2024-47496 is a medium-severity vulnerability in Juniper Junos, 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-2024-47496 in the wild and no public exploit code.

Affected product: Juniper Junos. 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-2024-47496/ (Markdown: https://insights.sbomify.com/CVE-2024-47496/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-47496
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-47496
- OSV: https://osv.dev/vulnerability/CVE-2024-47496

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-47496/
Summaries are generated and may contain mistakes; the official description above is the record.