# CVE-2020-5722: Grandstream Networks UCM6200 Series SQL Injection

> Unauthenticated remote SQL injection in Grandstream UCM6200 allows attackers to execute shell commands as root or inject HTML into password recovery emails.

- **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 28 Jan 2022 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Mar 2020
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-cggp-723h-vg48

## What is CVE-2020-5722?

CVE-2020-5722 is a critical SQL injection vulnerability in Grandstream UCM6200 Series, published on 23 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. An attacker can use this vulnerability to execute shell commands as root on versions before 1.0.19.20 or inject HTML in password recovery emails in versions before 1.0.20.17.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2020-5722?

It affects 1 product.


Products: Grandstream Ucm6200 Firmware.

## How do I fix CVE-2020-5722?

No fix has been published for CVE-2020-5722 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 28 Jul 2022.

## Is CVE-2020-5722 being exploited?

Yes. Attackers have exploited CVE-2020-5722 in the wild since at least 28 Jan 2022.

Public exploit code:

- Grandstream UCM62xx IP PBX sendPasswordEmail RCE (metasploit)
- UCM6202 1.0.18.13 - Remote Command Injection (exploitdb)
- Grandstream UCM6200 - SQL Injection (nuclei): http/cves/2020/CVE-2020-5722.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5722 and fix it if it is affected.

What it is: CVE-2020-5722 is a critical SQL injection vulnerability in Grandstream UCM6200 Series, published on 23 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2020-5722 in the wild since at least 28 Jan 2022.

Affected product: Grandstream UCM6200 Series. 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-2020-5722/ (Markdown: https://insights.sbomify.com/CVE-2020-5722/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5722
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5722
- OSV: https://osv.dev/vulnerability/CVE-2020-5722

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-5722/
Summaries are generated and may contain mistakes; the official description above is the record.