# CVE-2020-8470: Path traversal in Trend Micro OfficeScan, Trend Micro Apex One, Trend Micro Worry-Free Business Security (WFBS)

> Unauthenticated attackers can delete arbitrary files on the server with SYSTEM privileges via a vulnerable DLL in Trend Micro security products.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Mar 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-93p7-r5v9-rj38

## What is CVE-2020-8470?

CVE-2020-8470 is a high-severity path traversal vulnerability in Trendmicro Apex One, published on 18 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Trend Micro Apex One (2019), OfficeScan XG and Worry-Free Business Security (9.0, 9.5, 10.0) server contains a vulnerable service DLL file that could allow an attacker to delete any file on the server with SYSTEM level privileges. Authentication is not required to exploit this vulnerability.

## Which versions are affected by CVE-2020-8470?

It affects 3 products.


Products: Trendmicro Apex One, Trendmicro Officescan, Trendmicro Worry-Free Business Security.

## How do I fix CVE-2020-8470?

No fix has been published for CVE-2020-8470 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8470 being exploited?

There is no known exploitation of CVE-2020-8470 in the wild and no public exploit code.

## Other vulnerabilities in Trendmicro Apex One

- [CVE-2020-8599](https://insights.sbomify.com/CVE-2020-8599/): Trend Micro Apex One and OfficeScan Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2025-54948](https://insights.sbomify.com/CVE-2025-54948/): Trend Micro Apex One OS Command Injection (critical 9.4, exploited in the wild)
- [CVE-2021-36741](https://insights.sbomify.com/CVE-2021-36741/): Trend Micro Multiple Products Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2020-8467](https://insights.sbomify.com/CVE-2020-8467/): Trend Micro Apex One and OfficeScan Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2020-8468](https://insights.sbomify.com/CVE-2020-8468/): Trend Micro Multiple Products Content Validation Escape (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8470 and fix it if it is affected.

What it is: CVE-2020-8470 is a high-severity path traversal vulnerability in Trendmicro Apex One, published on 18 Mar 2020. 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-2020-8470 in the wild and no public exploit code.

Affected product: Trendmicro Apex One. 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-2020-8470/ (Markdown: https://insights.sbomify.com/CVE-2020-8470/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8470
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8470
- OSV: https://osv.dev/vulnerability/CVE-2020-8470

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8470/
Summaries are generated and may contain mistakes; the official description above is the record.