# CVE-2021-20030: Path traversal in SonicWall GMS

> Unauthenticated attackers can exploit path traversal to access sensitive application binaries and configuration files in SonicWall GMS.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:** 13 Oct 2022
- **Updated:** 16 May 2025
- **Also known as:** GHSA-3xqx-3w36-qfg8

## What is CVE-2021-20030?

CVE-2021-20030 is a high-severity path traversal vulnerability in SonicWall GMS, published on 13 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SonicWall GMS is vulnerable to file path manipulation resulting that an unauthenticated attacker can gain access to web directory containing application's binaries and configuration files.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-20030?

It affects 1 product.


Products: Sonicwall Global Management System.

## How do I fix CVE-2021-20030?

No fix has been published for CVE-2021-20030 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20030 being exploited?

There is no known exploitation of CVE-2021-20030 in the wild and no public exploit code.

## Other vulnerabilities in SonicWall GMS

- [CVE-2021-20020](https://insights.sbomify.com/CVE-2021-20020/): Privilege escalation in Global Management System (GMS) (critical 9.8)
- [CVE-2019-7478](https://insights.sbomify.com/CVE-2019-7478/): SQL injection in GMS (critical 9.8)
- [CVE-2018-9866](https://insights.sbomify.com/CVE-2018-9866/): Command injection in Global Management System (GMS) (critical 9.8)
- [CVE-2019-7476](https://insights.sbomify.com/CVE-2019-7476/): Hardcoded credentials in Global Management System (GMS) (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20030 and fix it if it is affected.

What it is: CVE-2021-20030 is a high-severity path traversal vulnerability in SonicWall GMS, published on 13 Oct 2022. 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-2021-20030 in the wild and no public exploit code.

Affected product: SonicWall GMS. 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-2021-20030/ (Markdown: https://insights.sbomify.com/CVE-2021-20030/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20030
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20030
- OSV: https://osv.dev/vulnerability/CVE-2021-20030

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20030/
Summaries are generated and may contain mistakes; the official description above is the record.