# CVE-2023-34563: Memory corruption in n/a

> An authenticated attacker can exploit a buffer overflow in Netgear R6250 firmware to execute arbitrary code.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jun 2023
- **Updated:** 9 Dec 2024
- **Also known as:** GHSA-5jxp-5vrv-qmg9

## What is CVE-2023-34563?

CVE-2023-34563 is a critical memory corruption vulnerability in Netgear R6250 Firmware, published on 20 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

netgear R6250 Firmware Version 1.0.4.48 is vulnerable to Buffer Overflow after authentication.

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

## Which versions are affected by CVE-2023-34563?

It affects 1 product.


Products: Netgear R6250 Firmware.

## How do I fix CVE-2023-34563?

No fix has been published for CVE-2023-34563 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34563 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-34563 exists.

## Other vulnerabilities in Netgear R6250 Firmware

- [CVE-2023-33532](https://insights.sbomify.com/CVE-2023-33532/): Command injection in n/a (critical 9.8)
- [CVE-2020-28373](https://insights.sbomify.com/CVE-2020-28373/): Memory corruption in n/a (high 8.8)
- [CVE-2017-18744](https://insights.sbomify.com/CVE-2017-18744/): Memory corruption in n/a (high 8.8)
- [CVE-2017-18741](https://insights.sbomify.com/CVE-2017-18741/): Misconfiguration in n/a (high 7.4)
- [CVE-2021-38519](https://insights.sbomify.com/CVE-2021-38519/): Command injection in n/a (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34563 and fix it if it is affected.

What it is: CVE-2023-34563 is a critical memory corruption vulnerability in Netgear R6250 Firmware, published on 20 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-34563 exists.

Affected product: Netgear R6250 Firmware. 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-2023-34563/ (Markdown: https://insights.sbomify.com/CVE-2023-34563/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34563
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34563
- OSV: https://osv.dev/vulnerability/CVE-2023-34563

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34563/
Summaries are generated and may contain mistakes; the official description above is the record.