# CVE-2023-47625: Global Buffer Overflow leading to denial of service in PX4-Autopilot

> A buffer overflow in PX4 Autopilot allows remote attackers to cause denial of service by sending malicious RC packets, requiring an upgrade to fix.

- **Severity:** Low 2.9 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A: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:** 13 Nov 2023
- **Updated:** 3 Sep 2024
- **Also known as:** GHSA-qpw7-65ww-wj82

## What is CVE-2023-47625?

CVE-2023-47625 is a low-severity memory corruption vulnerability in PX4-Autopilot, published on 13 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

PX4 autopilot is a flight control solution for drones. In affected versions a global buffer overflow vulnerability exists in the CrsfParser_TryParseCrsfPacket function in /src/drivers/rc/crsf_rc/CrsfParser.cpp:298 due to the invalid size check. A malicious user may create an RC packet remotely and that packet goes into the device where the _rcs_buf reads. The global buffer overflow vulnerability will be triggered and the drone can behave unexpectedly. This issue has been addressed in version 1.14.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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

## Which versions are affected by CVE-2023-47625?

It affects 1 product.


Products: Dronecode Px4 Drone Autopilot.

## How do I fix CVE-2023-47625?

No fix has been published for CVE-2023-47625 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-47625 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-47625 exists.

## Other vulnerabilities in PX4-Autopilot

- [CVE-2026-26741](https://insights.sbomify.com/CVE-2026-26741/): Business logic in n/a (high 8.1)
- [CVE-2026-26742](https://insights.sbomify.com/CVE-2026-26742/): Security feature bypass in n/a (high 8.1)
- [CVE-2024-40427](https://insights.sbomify.com/CVE-2024-40427/): Memory corruption in n/a (high 7.9)
- [CVE-2026-32708](https://insights.sbomify.com/CVE-2026-32708/): Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot) (high 7.8)
- [CVE-2024-38952](https://insights.sbomify.com/CVE-2024-38952/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-47625 and fix it if it is affected.

What it is: CVE-2023-47625 is a low-severity memory corruption vulnerability in PX4-Autopilot, published on 13 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-47625 exists.

Affected product: PX4-Autopilot. 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-2023-47625/ (Markdown: https://insights.sbomify.com/CVE-2023-47625/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-47625
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-47625
- OSV: https://osv.dev/vulnerability/CVE-2023-47625

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-47625/
Summaries are generated and may contain mistakes; the official description above is the record.