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

Vulnerability summary

CVE-2020-5722 is a high (CVSS 10.0) SQL Injection vulnerability in Grandstream UCM6200. It is known to be exploited: CISA lists it, first on 28-01-2022. EPSS estimates a 84.41% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities. 5 public exploits are recorded.

Timeline

1. 23-03-2020
   PublishedVulnerability first disclosed.
2. 28-01-2022
   Added to CISA KEVExploitedGrandstream Networks UCM6200 Series SQL Injection Vulnerability
3. 28-07-2022
   CISA remediation dueDeadline passedApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

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.

• CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.