# CVE-2024-23973: Silicon Labs Gecko OS HTTP GET Request Handling Stack-based Buffer Overflow

> Network-adjacent attackers can execute arbitrary code on Silicon Labs Gecko OS devices via a stack-based buffer overflow in HTTP GET request handling.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 30 Jan 2025
- **Updated:** 26 Aug 2025
- **Also known as:** GHSA-fqm6-c2wr-r94m

## What is CVE-2024-23973?

CVE-2024-23973 is a high-severity memory corruption vulnerability in Silicon Labs Gecko OS, published on 30 Jan 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. 

The specific flaw exists within the handling of HTTP GET requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2024-23973?

It affects 1 product.


Products: Silabs Gecko Os.

## How do I fix CVE-2024-23973?

No fix has been published for CVE-2024-23973 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-23973 being exploited?

There is no known exploitation of CVE-2024-23973 in the wild and no public exploit code.

## Other vulnerabilities in Silicon Labs Gecko OS

- [CVE-2025-2837](https://insights.sbomify.com/CVE-2025-2837/): Silicon Labs Gecko OS HTTP Request Handling Stack-based Buffer Overflow Remote Code Execution Vulnerability (high 8.8)
- [CVE-2024-23938](https://insights.sbomify.com/CVE-2024-23938/): Silicon Labs Gecko OS Debug Interface Stack-based Buffer Overflow Remote Code Execution Vulnerability (high 8.8)
- [CVE-2024-24731](https://insights.sbomify.com/CVE-2024-24731/): Silicon Labs Gecko OS http_download Stack-based Buffer Overflow (high 7.5)
- [CVE-2025-2838](https://insights.sbomify.com/CVE-2025-2838/): Silicon Labs Gecko OS DNS Response Processing Infinite Loop Denial-of-Service Vulnerability (medium 6.5)
- [CVE-2024-23937](https://insights.sbomify.com/CVE-2024-23937/): Silicon Labs Gecko OS Debug Interface Format String (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-23973 and fix it if it is affected.

What it is: CVE-2024-23973 is a high-severity memory corruption vulnerability in Silicon Labs Gecko OS, published on 30 Jan 2025. 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-2024-23973 in the wild and no public exploit code.

Affected product: Silicon Labs Gecko OS. 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-2024-23973/ (Markdown: https://insights.sbomify.com/CVE-2024-23973/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-23973
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-23973
- OSV: https://osv.dev/vulnerability/CVE-2024-23973

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-23973/
Summaries are generated and may contain mistakes; the official description above is the record.