# CVE-2024-25394: Memory corruption in n/a

> A buffer overflow in the RT-Thread ymodem utility allows attackers to execute arbitrary code or cause a denial of service via crafted input.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Mar 2024
- **Updated:** 4 Nov 2025
- **Also known as:** GHSA-vcq2-59g4-9rm6

## What is CVE-2024-25394?

CVE-2024-25394 is a medium-severity memory corruption vulnerability in n/a, published on 27 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A buffer overflow occurs in utilities/ymodem/ry_sy.c in RT-Thread through 5.0.2 because of an incorrect sprintf call or a missing '\0' character.

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

## Which versions are affected by CVE-2024-25394?

It affects 1 product.


Products: Rt-Thread Rt-Thread.

## How do I fix CVE-2024-25394?

No fix has been published for CVE-2024-25394 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-25394 being exploited?

There is no known exploitation of CVE-2024-25394 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-25393](https://insights.sbomify.com/CVE-2024-25393/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-25395](https://insights.sbomify.com/CVE-2024-25395/): Memory corruption in n/a (high 8.8)
- [CVE-2025-5865](https://insights.sbomify.com/CVE-2025-5865/): RT-Thread Parameter lwp_syscall.c sys_select memory corruption (high 8.6)
- [CVE-2025-5866](https://insights.sbomify.com/CVE-2025-5866/): RT-Thread lwp_syscall.c sys_sigprocmask array index (high 8.6)
- [CVE-2025-5867](https://insights.sbomify.com/CVE-2025-5867/): RT-Thread lwp_syscall.c csys_sendto null pointer dereference (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-25394 and fix it if it is affected.

What it is: CVE-2024-25394 is a medium-severity memory corruption vulnerability in n/a, published on 27 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-25394 in the wild and no public exploit code.

Affected product: n/a. 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-2024-25394/ (Markdown: https://insights.sbomify.com/CVE-2024-25394/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-25394
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-25394
- OSV: https://osv.dev/vulnerability/CVE-2024-25394

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-25394/
Summaries are generated and may contain mistakes; the official description above is the record.