# CVE-2021-42847: File upload in n/a

> Attackers can upload and execute arbitrary files on Zoho ManageEngine ADAudit Plus, leading to remote code execution.

- **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:** 11 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-8fpx-82w4-947r

## What is CVE-2021-42847?

CVE-2021-42847 is a critical vulnerability in Zohocorp Manageengine Adaudit Plus, published on 11 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Zoho ManageEngine ADAudit Plus before 7006 allows attackers to write to, and execute, arbitrary files.

## Which versions are affected by CVE-2021-42847?

It affects 1 product.


Products: Zohocorp Manageengine Adaudit Plus.

## How do I fix CVE-2021-42847?

No fix has been published for CVE-2021-42847 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-42847 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-42847 exists.

Public exploit code:

- ManageEngine ADAudit Plus Authenticated File Write RCE (metasploit)

## Other vulnerabilities in Zohocorp Manageengine Adaudit Plus

- [CVE-2023-48792](https://insights.sbomify.com/CVE-2023-48792/): SQL injection in n/a (critical 9.8)
- [CVE-2023-48793](https://insights.sbomify.com/CVE-2023-48793/): SQL injection in n/a (critical 9.8)
- [CVE-2022-28219](https://insights.sbomify.com/CVE-2022-28219/): XML external entity in n/a (critical 9.8)
- [CVE-2020-11532](https://insights.sbomify.com/CVE-2020-11532/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2018-10466](https://insights.sbomify.com/CVE-2018-10466/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-42847 and fix it if it is affected.

What it is: CVE-2021-42847 is a critical vulnerability in Zohocorp Manageengine Adaudit Plus, published on 11 Nov 2021. 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-2021-42847 exists.

Affected product: Zohocorp Manageengine Adaudit 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-2021-42847/ (Markdown: https://insights.sbomify.com/CVE-2021-42847/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-42847
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-42847
- OSV: https://osv.dev/vulnerability/CVE-2021-42847

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-42847/
Summaries are generated and may contain mistakes; the official description above is the record.