# CVE-2023-39248: Denial of service in Dell Networking OS10

> Remote unauthenticated attackers can cause network flooding and denial of service on Dell OS10 switches configured with VLT and VRRP.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Dec 2023
- **Updated:** 28 May 2025
- **Also known as:** GHSA-p2wr-4599-vv5h

## What is CVE-2023-39248?

CVE-2023-39248 is a high-severity denial of service vulnerability in Dell Networking OS10, published on 5 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Dell OS10 Networking Switches running 10.5.2.x and above contain an Uncontrolled Resource Consumption (Denial of Service) vulnerability, when switches are configured with VLT and VRRP. A remote unauthenticated user can cause the network to be flooded leading to Denial of Service for actual network users. This is a high severity vulnerability as it allows an attacker to cause an outage of network. Dell recommends customers to upgrade at the earliest opportunity.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2023-39248?

It affects 1 product.


Products: Dell Networking Os10.

## How do I fix CVE-2023-39248?

No fix has been published for CVE-2023-39248 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39248 being exploited?

There is no known exploitation of CVE-2023-39248 in the wild and no public exploit code.

## Other vulnerabilities in Dell Networking OS10

- [CVE-2024-25949](https://insights.sbomify.com/CVE-2024-25949/): Privilege escalation in SmartFabric OS10 Software (high 8.8)
- [CVE-2021-36307](https://insights.sbomify.com/CVE-2021-36307/): Privilege escalation in Networking OS (high 8.8)
- [CVE-2018-15778](https://insights.sbomify.com/CVE-2018-15778/): DSA-2019-019: Dell Networking OS10 OS Command Injection Vulnerability (high 8.8)
- [CVE-2021-36306](https://insights.sbomify.com/CVE-2021-36306/): Auth bypass in Networking OS (high 8.1)
- [CVE-2018-15784](https://insights.sbomify.com/CVE-2018-15784/): DSA-2019-001: Dell Networking OS10 Improper Certificate Validation Vulnerability (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39248 and fix it if it is affected.

What it is: CVE-2023-39248 is a high-severity denial of service vulnerability in Dell Networking OS10, published on 5 Dec 2023. 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-2023-39248 in the wild and no public exploit code.

Affected product: Dell Networking OS10. 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-2023-39248/ (Markdown: https://insights.sbomify.com/CVE-2023-39248/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39248
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39248
- OSV: https://osv.dev/vulnerability/CVE-2023-39248

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-39248/
Summaries are generated and may contain mistakes; the official description above is the record.