# CVE-2021-32458: Memory corruption in Trend Micro Home Network Security

> A stack-based buffer overflow in Trend Micro Home Network Security allows code execution if an attacker can first run low-privileged code on the device.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-pf2v-6j36-j2xg

## What is CVE-2021-32458?

CVE-2021-32458 is a high-severity memory corruption vulnerability in Trend Micro Home Network Security, published on 27 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Trend Micro Home Network Security version 6.6.604 and earlier is vulnerable to an iotcl stack-based buffer overflow vulnerability which could allow an attacker to issue a specially crafted iotcl which could lead to code execution on affected devices. An attacker must first obtain the ability to execute low-privileged code on the target device in order to exploit this vulnerability.

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

## Which versions are affected by CVE-2021-32458?

It affects 1 product.


Products: Trendmicro Home Network Security.

## How do I fix CVE-2021-32458?

No fix has been published for CVE-2021-32458 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-32458 being exploited?

There is no known exploitation of CVE-2021-32458 in the wild and no public exploit code.

## Other vulnerabilities in Trend Micro Home Network Security

- [CVE-2021-32457](https://insights.sbomify.com/CVE-2021-32457/): Memory corruption in Trend Micro Home Network Security (high 7.8)
- [CVE-2021-31517](https://insights.sbomify.com/CVE-2021-31517/): Denial of service in Trend Micro Home Network Security (high 7.5)
- [CVE-2021-31518](https://insights.sbomify.com/CVE-2021-31518/): Denial of service in Trend Micro Home Network Security (high 7.5)
- [CVE-2021-32459](https://insights.sbomify.com/CVE-2021-32459/): Hardcoded credentials in Trend Micro Home Network Security (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32458 and fix it if it is affected.

What it is: CVE-2021-32458 is a high-severity memory corruption vulnerability in Trend Micro Home Network Security, published on 27 May 2021. 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-2021-32458 in the wild and no public exploit code.

Affected product: Trend Micro Home Network Security. 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-2021-32458/ (Markdown: https://insights.sbomify.com/CVE-2021-32458/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32458
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32458
- OSV: https://osv.dev/vulnerability/CVE-2021-32458

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32458/
Summaries are generated and may contain mistakes; the official description above is the record.