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

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-01-28. EPSS: 84.4% chance of exploitation in the next 30 days.

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.

Affected products

• Grandstream UCM6200 Firmware: before 1.0.19.20 (fixed in 1.0.19.20)

Published 2020-03-23. Last modified 2026-06-17.