# CVE-2021-37539: File upload in n/a

> Attackers can upload malicious files to achieve remote code execution in Zoho ManageEngine ADManager Plus.

- **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:** 27 Sep 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-p5xf-xrgh-68gm

## What is CVE-2021-37539?

CVE-2021-37539 is a critical vulnerability in Zohocorp Manageengine Admanager Plus, published on 27 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Zoho ManageEngine ADManager Plus before 7111 is vulnerable to unrestricted file which leads to Remote code execution.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2021-37539?

It affects 1 product.


Products: Zohocorp Manageengine Admanager Plus.

## How do I fix CVE-2021-37539?

No fix has been published for CVE-2021-37539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-37539 being exploited?

There is no known exploitation of CVE-2021-37539 in the wild and no public exploit code.

## Other vulnerabilities in Zohocorp Manageengine Admanager Plus

- [CVE-2021-42002](https://insights.sbomify.com/CVE-2021-42002/): File upload in n/a (critical 9.8)
- [CVE-2021-37762](https://insights.sbomify.com/CVE-2021-37762/): File upload in n/a (critical 9.8)
- [CVE-2021-37918](https://insights.sbomify.com/CVE-2021-37918/): File upload in n/a (critical 9.8)
- [CVE-2021-37919](https://insights.sbomify.com/CVE-2021-37919/): File upload in n/a (critical 9.8)
- [CVE-2021-37920](https://insights.sbomify.com/CVE-2021-37920/): File upload in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-37539 and fix it if it is affected.

What it is: CVE-2021-37539 is a critical vulnerability in Zohocorp Manageengine Admanager Plus, published on 27 Sep 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-2021-37539 in the wild and no public exploit code.

Affected product: Zohocorp Manageengine Admanager Plus. 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-2021-37539/ (Markdown: https://insights.sbomify.com/CVE-2021-37539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-37539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-37539
- OSV: https://osv.dev/vulnerability/CVE-2021-37539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-37539/
Summaries are generated and may contain mistakes; the official description above is the record.