# CVE-2021-44077: Zoho ManageEngine ServiceDesk Plus Remote Code Execution

> Unauthenticated attackers can execute arbitrary code via vulnerable RestAPI endpoints in ManageEngine ServiceDesk Plus and SupportCenter 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:** Yes, since 1 Dec 2021 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Nov 2021
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-xm89-vxjx-jvcg

## What is CVE-2021-44077?

CVE-2021-44077 is a critical missing authorization vulnerability in Zohocorp Manageengine Servicedesk Plus, published on 29 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2021-44077?

It affects 3 products.


Products: Zohocorp Manageengine Servicedesk Plus, Zohocorp Manageengine Servicedesk Plus Msp, Zohocorp Manageengine Supportcenter Plus.

## How do I fix CVE-2021-44077?

No fix has been published for CVE-2021-44077 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 15 Dec 2021.

## Is CVE-2021-44077 being exploited?

Yes. Attackers have exploited CVE-2021-44077 in the wild since at least 1 Dec 2021.

Public exploit code:

- Proof of Concept Exploit for ManageEngine ServiceDesk Plus CVE-2021-44077 (github_poc): https://github.com/horizon3ai/CVE-2021-44077
- Golang Proof of Concept Exploit for CVE-2021-44077: PreAuth RCE in ManageEngine ServiceDesk Plus < 11306 (github_poc): https://github.com/pizza-power/Golang-CVE-2021-44077-POC
- ManageEngine ServiceDesk Plus CVE-2021-44077 (metasploit)
- Zoho ManageEngine ServiceDesk Plus - Remote Code Execution (nuclei): http/cves/2021/CVE-2021-44077.yaml

## Other vulnerabilities in Zohocorp Manageengine Servicedesk Plus

- [CVE-2021-37415](https://insights.sbomify.com/CVE-2021-37415/): Zoho ManageEngine ServiceDesk Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-8394](https://insights.sbomify.com/CVE-2019-8394/): Zoho ManageEngine ServiceDesk Plus (SDP) File Upload (high 7.5, exploited in the wild)
- [CVE-2021-44526](https://insights.sbomify.com/CVE-2021-44526/): Auth bypass in n/a (critical 9.8)
- [CVE-2019-8395](https://insights.sbomify.com/CVE-2019-8395/): Path traversal in n/a (critical 9.8)
- [CVE-2020-35682](https://insights.sbomify.com/CVE-2020-35682/): Auth bypass in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44077 and fix it if it is affected.

What it is: CVE-2021-44077 is a critical missing authorization vulnerability in Zohocorp Manageengine Servicedesk Plus, published on 29 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2021-44077 in the wild since at least 1 Dec 2021.

Affected product: Zohocorp Manageengine Servicedesk 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-2021-44077/ (Markdown: https://insights.sbomify.com/CVE-2021-44077/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44077
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44077
- OSV: https://osv.dev/vulnerability/CVE-2021-44077

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-44077/
Summaries are generated and may contain mistakes; the official description above is the record.