# CVE-2021-37566: Memory corruption in n/a

> Out-of-bounds write in MediaTek Wi-Fi chipsets allows attackers to execute arbitrary code or cause denial of service via IEEE 1905 protocol handling.

- **Severity:** High 8.2 (`CVSS:3.1/AC:L/AV:N/A:L/C:H/I:N/PR:N/S:U/UI:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7wwp-gp85-fwg7

## What is CVE-2021-37566?

CVE-2021-37566 is a high-severity memory corruption vulnerability in n/a, published on 25 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

MediaTek microchips, as used in NETGEAR devices through 2021-11-11 and other devices, mishandle IEEE 1905 protocols. (Affected Chipsets MT7603E, MT7610, MT7613, MT7615, MT7620, MT7622, MT7628, MT7629, MT7915; Affected Software Versions 2.0.2; Out-of-bounds write).

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2021-37566?

It affects 9 products.


Products: Mediatek Mt7603e Firmware, Mediatek Mt7610 Firmware, Mediatek Mt7613 Firmware, Mediatek Mt7615 Firmware, Mediatek Mt7620 Firmware, Mediatek Mt7622 Firmware, Mediatek Mt7628 Firmware, Mediatek Mt7629 Firmware, Mediatek Mt7915 Firmware.

## How do I fix CVE-2021-37566?

No fix has been published for CVE-2021-37566 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-37566 being exploited?

There is no known exploitation of CVE-2021-37566 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-32467](https://insights.sbomify.com/CVE-2021-32467/): Memory corruption in n/a (high 8.2)
- [CVE-2021-32468](https://insights.sbomify.com/CVE-2021-32468/): Memory corruption in n/a (high 8.2)
- [CVE-2021-32469](https://insights.sbomify.com/CVE-2021-32469/): Memory corruption in n/a (high 8.2)
- [CVE-2021-35055](https://insights.sbomify.com/CVE-2021-35055/): Memory corruption in n/a (high 8.2)
- [CVE-2021-37560](https://insights.sbomify.com/CVE-2021-37560/): Memory corruption in n/a (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-37566 and fix it if it is affected.

What it is: CVE-2021-37566 is a high-severity memory corruption vulnerability in n/a, published on 25 Dec 2021. 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-2021-37566 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-2021-37566/ (Markdown: https://insights.sbomify.com/CVE-2021-37566/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-37566
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-37566
- OSV: https://osv.dev/vulnerability/CVE-2021-37566

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-37566/
Summaries are generated and may contain mistakes; the official description above is the record.