CVE-2020-5722

The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote...

9.8 CriticalIn KEVPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

84.3%Up 80.9 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2020-5722
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-89
Updated: 2026-11-02

CVE List 9.8

Record: CVE-2020-5722
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

EUVDEUVD-2020-26881 9.8

Record: EUVD-2020-26881
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-cggp-723h-vg48 9.8

The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote...

Record: GHSA-cggp-723h-vg48
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

CISA KEV No score

Grandstream Networks UCM6200 Series SQL Injection Vulnerability

Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. Exploitation can allow for code execution as root.

Record: CVE-2020-5722
Weakness: CWE-89
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Metasploit	Grandstream UCM62xx IP PBX sendPasswordEmail RCE	2020-03-23
Exploit-DB	UCM6202 1.0.18.13 - Remote Command Injection	2020-03-24
Nuclei	Grandstream UCM6200 - SQL Injection

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation, exploits
Nov 2, 2026	first indexed	CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, Metasploit, Nuclei, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-5722 is a critical vulnerability (CVSS 9.8) in Grandstream Ucm6200, published March 23, 2020. CISA lists it as known to be exploited, since January 28, 2022. EUVD reports exploitation since January 28, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 84.3%, the 99th percentile. No source names a fixed version.